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  • BigInteger加减乘除

    2021-03-10 18:40:03
    BigInteger加减乘除 加法:add 减法:subtract 乘法:multiply 除法:divide 两个BigInteger最大值:max 两个BigInteger最小值:min

    BigInteger加减乘除

    加法:add
    减法:subtract
    乘法:multiply
    除法:divide
    两个BigInteger最大值:max
    两个BigInteger最小值:min

    展开全文
  • BigInteger 加减乘除

    千次阅读 2018-12-21 15:45:44
      import java.math.BigInteger; import java.util.Arrays;... * public BigInteger add(BigInteger val):  * public BigInteger subtract(BigInteger val):  * public BigInteger multi...

    package cn.itcast_02;
     
    import java.math.BigInteger;
    import java.util.Arrays;
     
    /*
     * public BigInteger add(BigInteger val):加
     * public BigInteger subtract(BigInteger val):减
     * public BigInteger multiply(BigInteger val):乘
     * public BigInteger divide(BigInteger val):除
     * public BigInteger[] divideAndRemainder(BingInteger val):返回商和余数的数组
     */
    public class BigIntegerDemo {
        public static void main(String[] args) {
            BigInteger bi1 = new BigInteger("999");
            BigInteger bi2 = new BigInteger("50");
            
            //public BigInteger add(BigInteger val):加
            System.out.println("add:"+bi1.add(bi2));
            
            //public BigInteger subtract(BigInteger val):减
            System.out.println("subtract:"+bi1.subtract(bi2));
            
            //public BigInteger multiply(BigInteger val):乘
            System.out.println("multiply:"+bi1.multiply(bi2));
            
            //public BigInteger divide(BigInteger val):除
            System.out.println("divide:"+bi1.divide(bi2));
            
            //public BigInteger[] divideAndRemainder(BingInteger val):返回商和余数的数组
            BigInteger[] bis = bi1.divideAndRemainder(bi2);
            System.out.println("divideAndRemainder:"+Arrays.toString(bis));
            System.out.println("商:"+bis[0]);
            System.out.println("余数:"+bis[1]);
        }
     
    }
    --------------------- 
    作者:辐_射 
    来源:CSDN 
    原文:https://blog.csdn.net/l1585931143/article/details/53511506 
    版权声明:本文为博主原创文章,转载请附上博文链接!

    展开全文
  • function parseInt10(i) { if (isNumber(i)) { return Math.floor(i); } else { return parseInt(i); } } var numRegExp = /^[+-]?(0[box]?...
        function parseInt10(i) {
            if (isNumber(i)) {
                return Math.floor(i);
            }
            else {
                return parseInt(i);
            }
        }
    
        var numRegExp = /^[+-]?(0[box]?)?\w*$/;
    
        function checkRadixAndNumber(s, radix) {
            if (!numRegExp.test(s)) {
                throw new Error("Input first param must be a number string and and sign only one +/-!.");
            }
            s = toLowerCase(s);
            var sign = '+';
            if (eq(s.charAt(0), '-')) {
                sign = '-';
                s = s.substring(1);
            } else if (eq(s.charAt(0), '+')) {
                // sign = '+';
                s = s.substring(1);
            }
    
            if (eq(s.charAt(0), '0')) {
                var radixI = 8;
                s = s.substring(1);
                if (eq(s.charAt(0), 'o')) {
                    // radix = 8;
                    s = s.substring(1);
                }
                else if (eq(s.charAt(0), 'x')) {
                    radixI = 16;
                    s = s.substring(1);
                } else if (eq(s.charAt(0), 'b')) {
                    radixI = 2;
                    s = s.substring(1);
                } else if (eq(len(s), 0)) {
                    radixI = radix;
                }
                radix = radixI;
            }
    
            if (!radix || lt(radix, 2) || gt(radix, 36)) {
                throw new Error("Radix between 2 and 36.");
            }
    
            for (var i = 0; i < len(s); i++) {
                if (nlt(digitsMap.get(s.charAt(i)), radix)) {
                    throw new Error("Input number cannot greater than radix: " + radix);
                }
            }
            s = str2ListBySeparator(s, '');
            s = clearOpenZeroI(s);
            return [list2StrWithJoint(s, ''), radix, sign];
        }
    
        function checkBigIntegerNumber10(a) {
            if (oExist(a) && oExist(a.length)) {
                for (var i = 0; i < len(a); i++) {
                    if (!((a[i] >= 0 && a[i] <= 9) || (a[i] >= '0' && a[i] <= '9'))) {
                        throw "Not a integer number string."
                    }
                }
            } else {
                throw "Not a integer number string.";
            }
        }
    
        function initZero(nums) {
            for (var i = 0; i < len(nums); i++) {
                nums[i] = 0;
            }
        }
    
        function clearOpenZeroI(nums) {
            var openZero = 0;
            while (eq(nums[openZero], 0)) {
                openZero++;
            }
            nums = nums.slice(openZero);
            if (eq(len(nums), 0)) {
                nums = [0];
            }
            return nums;
        }
    
        function clearOpenZeroS(nums) {
            var openZero = 0;
            while (eq(nums[openZero], '0')) {
                openZero++;
            }
            nums = nums.slice(openZero);
            if (eq(len(nums), 0)) {
                nums = '0';
            }
            return nums;
        }
    
        var int10RegExp = /^[+-]?\d*$/;
    
        function whatSign(s) {
            return s.startsWith('-') ? '-' : '+';
        }
    
        function getRidOfSign(s) {
            if (eq(s.charAt(0), '-')) {
                s = s.substring(1);
            } else if (eq(s.charAt(0), '+')) {
                s = s.substring(1);
            }
            return s;
        }
    
        /**
         * 
         * @param {String} a 
         * @param {String} b 
         */
        function addInt10(a, b) {
            //check decimal format
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            //calc sign
            var asign = whatSign(a);
            var bsign = whatSign(b);
    
            a = getRidOfSign(a);
            b = getRidOfSign(b);
    
    
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
    
            a = clearOpenZeroS(a);
            b = clearOpenZeroS(b);
    
            //determine end sign
            if (eqInt10(a, b) && !eq(asign, bsign)) {
                return '0';
            }
            else if (ltInt10(a, b)) {//a > b ,indeed
                var tmp = a;//data swap
                a = b;
                b = tmp;
                tmp = bsign;//sign swap
                bsign = asign;
                asign = tmp;
            }
            var finalSign = asign;
    
            var radix = 10;
            var nums = EMPTY_VALUES.ARRAY;
            var le = pmax(a, b);
            nums.length = le + 1;
            initZero(nums);
            var i = len(a) - 1;
            var j = len(b) - 1;
            var k = 0;
            //core 1
            while (i >= 0 && j >= 0) {
                if (eq(asign, bsign)) {//for +
                    nums[k++] = parseInt10(a[i--]) + parseInt10(b[j--]);
                } else {//for -
                    nums[k++] = parseInt10(a[i--]) - parseInt10(b[j--]);
                }
            }
            while (i >= 0) {
                nums[k++] = parseInt10(a[i--]);
            }
            // while (j >= 0) {//this is error,max num rest!!!Do you understand?!!!
            //     nums[k++] = parseInt10(b[j--]);
            // }
    
            // core 2
            for (var n = 0; n < len(nums); n++) {
                if (eq(asign, bsign)) {//+ handler
                    if (nums[n] >= radix) {
                        nums[n + 1] += parseInt10(nums[n] / radix);
                        nums[n] %= radix;
                    }
                } else {//- handler
                    if (nums[n] < 0) {//because of '-',don't have num >= radix;
                        nums[n + 1] -= 1;
                        nums[n] += radix;
                    }
                }
    
            }
            nums.reverse();
            nums = clearOpenZeroI(nums);
            var s = list2StrWithJoint(nums, '');
            if (eq(finalSign, '-')) {
                s = '-' + s;
            }
            return s;
        }
    
        /**
         * 
         * @param {String} a 
         * @param {String} b 
         */
        function multiplyInt10(a, b) {
    
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
    
            //calc sign
            var asign = whatSign(a);
            var bsign = whatSign(b);
    
            a = getRidOfSign(a);
            b = getRidOfSign(b);
    
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
    
            a = clearOpenZeroS(a);
            b = clearOpenZeroS(b);
    
            var finalSign = eq(asign, bsign) ? '+' : '-';
    
            var radix = 10;
            var nums = EMPTY_VALUES.ARRAY;
            // var le = pmax(a, b);
            // nums.length = le * 2 + 1;
            nums.length = len(a) + len(b);
            initZero(nums);
            //core 1
            var k = 0;
            for (var i = len(a) - 1; i >= 0; i--) {
                for (var j = len(b) - 1; j >= 0; j--) {
                    nums[len(a) - 1 - i + k++] += parseInt10(a[i]) * parseInt10(b[j]);
                    // console.log(len(a) - 1 - i + k - 1, nums[len(a) - 1 - i + k - 1], parseInt10(a[i]), parseInt10(b[j]));
                }
                k = 0;
            }
            //core 2
            for (var n = 0; n < len(nums); n++) {
                if (nums[n] >= radix) {
                    nums[n + 1] += parseInt10(nums[n] / radix);
                    nums[n] %= radix;
                }
    
            }
            nums.reverse();
            nums = clearOpenZeroI(nums);
            var s = list2StrWithJoint(nums, '');
            if (eq(finalSign, '-')) {
                s = '-' + s;
            }
            return s;
    
        }
    
        function addInt10One(s) {
            // checkBigIntegerNumber10(s);
            return addInt10(s, '1');
        }
    
        function compareInt10(a, b) {
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
            if (len(a) > len(b)) {
                return 1;
            } else if (len(a) < len(b)) {
                return -1;
            }
            var i = 0;
            while (eq(a[i], b[i]) && i < len(a)) {
                i++;
            }
            if (eq(i, len(a))) {
                return 0;
            }
            else if (a[i] > b[i]) {
                return 1;
            } else if (a[i] < b[i]) {
                return -1;
            }
            return 0;
        }
    
        function gtInt10(a, b) {
            return compareInt10(a, b) > 0;
        }
        function ltInt10(a, b) {
            return compareInt10(a, b) < 0;
        }
        function eqInt10(a, b) {
            return eq(compareInt10(a, b), 0);
        }
    
        /**
         * 
         * @param {String} s 
         * @param {String} p 
         */
        function powerInt10(s, p) {
            if (!int10RegExp.test(s)) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            var finalSign = whatSign(s);
            s = getRidOfSign(s);
            checkBigIntegerNumber10(s);
            s = clearOpenZeroS(s);
            var num = '1';
            p = String(p);
            for (var i = '0'; ltInt10(i, p); i = addInt10One(i)) {
                num = multiplyInt10(num, s);
            }
            if (eq(finalSign, '-')) {
                num = '-' + num;
            }
            return num;
        }
        /**
         * 
         * @param {String} a 
         * @param {String} b 
         */
        function substractInt10(a, b) {
            //check decimal format
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            //calc sign
            // var asign = whatSign(a);
            var bsign = whatSign(b);
    
            // a = getRidOfSign(a);
            b = getRidOfSign(b);
    
            //exchange sign '+' and '-'
            b = eq(bsign, '-') ? b : '-' + b;
    
            return addInt10(a, b);
    
        }
    
        /**
         * 
         * @param {String} a 
         * @param {STring} b 
         */
        function divideInt10(a, b) {
            //check decimal format
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            //calc sign
            var asign = whatSign(a);
            var bsign = whatSign(b);
    
            a = getRidOfSign(a);
            b = getRidOfSign(b);
    
    
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
    
            a = clearOpenZeroS(a);
            b = clearOpenZeroS(b);
    
            if (eq(b, '0')) {
                throw new Error("divisor cannot be zero or 0");
            }
    
            var finalSign = eq(asign, bsign) ? '+' : '-';
    
            if (eq(a, '0')) {
                return eq(finalSign, '-') ? '-0' : '0';
            }
    
            //core
            var radix = '10';
            var quotient = '0';
            while (!(ltInt10(a, b))) {
                var rest = String(len(a) - len(b));
                var rest10 = powerInt10(radix, rest);
                var qn = multiplyInt10(b, rest10);
                if (gtInt10(qn, a)) {
                    rest = substractInt10(rest, '1');
                    rest10 = powerInt10(radix, rest);
                }
                qn = multiplyInt10(b, rest10);
                a = substractInt10(a, qn);
                quotient = addInt10(quotient, rest10);
            }
    
    
            if (eq(finalSign, '-')) {
                quotient = '-' + quotient;
            }
            return quotient;
    
        }
    
        /**
         * 
         * @param {String} a 
         * @param {String} b 
         */
        function modInt10(a, b) {
            //check decimal format
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            //calc sign
            // var asign = whatSign(a);
            // var bsign = whatSign(b);
    
            a = getRidOfSign(a);
            b = getRidOfSign(b);
    
    
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
    
            a = clearOpenZeroS(a);
            b = clearOpenZeroS(b);
    
            if (eq(b, '0')) {
                throw new Error("divisor cannot be zero or 0");
            }
    
            // var finalSign = asign;
    
            if (eq(a, '0')) {
                return eq(finalSign, '-') ? '-0' : '0';
            }
    
            //core
            var radix = '10';
            // var quotient = '0';
            while (!(ltInt10(a, b))) {
                var rest = String(len(a) - len(b));
                var rest10 = powerInt10(radix, rest);
                var qn = multiplyInt10(b, rest10);
                if (gtInt10(qn, a)) {
                    rest = substractInt10(rest, '1');
                    rest10 = powerInt10(radix, rest);
                }
                qn = multiplyInt10(b, rest10);
                a = substractInt10(a, qn);
                // quotient = addInt10(quotient, rest10);
            }
    
    
            // if (eq(finalSign, '-')) {
            //     a = '-' + a;
            // }
            return a;
    
        }
    
        /**
         * 
         * @param {String} a 
         * @param {String} b 
         */
        function divideAndRemainderInt10(a, b) {
            //check decimal format
            if (!(int10RegExp.test(a) && int10RegExp.test(b))) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
            //calc sign
            var asign = whatSign(a);
            // var bsign = whatSign(b);
    
            a = getRidOfSign(a);
            b = getRidOfSign(b);
    
    
            checkBigIntegerNumber10(a);
            checkBigIntegerNumber10(b);
    
            a = clearOpenZeroS(a);
            b = clearOpenZeroS(b);
    
            if (eq(b, '0')) {
                throw new Error("divisor cannot be zero or 0");
            }
    
            var finalSign = asign;
    
            if (eq(a, '0')) {
                return [eq(finalSign, '-') ? '-0' : '0', '0'];
            }
    
            //core
            var radix = '10';
            var quotient = '0';
            while (!(ltInt10(a, b))) {
                var rest = String(len(a) - len(b));
                var rest10 = powerInt10(radix, rest);
                var qn = multiplyInt10(b, rest10);
                if (gtInt10(qn, a)) {
                    rest = substractInt10(rest, '1');
                    rest10 = powerInt10(radix, rest);
                }
                qn = multiplyInt10(b, rest10);
                a = substractInt10(a, qn);
                quotient = addInt10(quotient, rest10);
            }
    
    
            if (eq(finalSign, '-')) {
                quotient = '-' + quotient;
            }
    
            return [quotient, a];
    
        }
    
        /**
         * 
         * @param {String} s 
         * @param {Number} radix 
         */
        function radixToInt10(s, radix) {
    
            var result = checkRadixAndNumber(s, radix);
            s = clearOpenZeroS(result[0]);
            radix = result[1];
            var sign = result[2];
            //core
    
            if (isNumber(radix) && !eq(radix, 10)) {
                var os = '0';
                radix = String(radix);
                for (var i = len(s) - 1; i >= 0; i--) {
                    os = addInt10(os,
                        multiplyInt10(
                            String(digitsMap.get(s[i])),
                            powerInt10(radix, len(s) - i - 1)
                        )
                    );//have to multiply n*radix^N
                }
                s = os;
            }
    
    
            if (eq(sign, '-')) {
                s = '-' + s;
            }
    
            return s;
        }
    
        /**
         * 
         * @param {String} s 
         * @param {Number} radix 
         */
        function int10ToRadix(s, radix) {
            if (!int10RegExp.test(s)) {
                throw new Error("params must be decimal number and sign only one +/-!");
            }
    
            var sign = whatSign(s);
    
            s = getRidOfSign(s);
    
            checkBigIntegerNumber10(s);
    
            s = clearOpenZeroS(s);
            //core
            if (isNumber(radix) && !eq(radix, 10)) {
                radix = String(radix);
                var radixNum = EMPTY_VALUES.ARRAY;
                var result = divideAndRemainderInt10(s, radix);
                radixNum.push(digits[result[1]]);
                while (!eq(result[0], '0')) {
                    result = divideAndRemainderInt10(result[0], radix);
                    radixNum.push(digits[result[1]]);
                }
                radixNum.reverse();
                s = list2StrWithJoint(radixNum, '');
            }
    
            if (eq(sign, '-')) {
                s = '-' + s;
            }
    
            return s;
    
        }
    
    
        function BigInteger(s, radix = 10) {
            ntfs(this, BigInteger);
            var r = checkRadixAndNumber(s, radix);
            this.s = r[0];
            this.data = str2ListBySeparator(this.s, '');
            this.radix = r[1];
            this.sign = r[2];
        }
    
        var BigInteger_impl = {
            int10: function () {//new bigint obj
                return new BigInteger(this.int10Value());
            },
            intRadix: function (r) {
                return new BigInteger(this.intRadixValue(r));
            },
            intRadixValue: function (r) {
                return int10ToRadix(this.int10Value(), r);
            },
            unsignedInt10Value: function () {//string
                // var data = EMPTY_VALUES.ARRAY;
                // var s = '0';
                // var radix = String(this.radix);
                // for (var i = len(this.s) - 1; i >= 0; i--) {
                //     s = addInt10(s,
                //         multiplyInt10(
                //             String(digitsMap.get(this.s[i])),
                //             powerInt10(radix, len(this.s) - i - 1)
                //         )
                //     );//have to multiply n*radix^N
                // }
                // return s;
    
                return radixToInt10(this.s, this.radix);
            },
            int10Value: function () {
                var sign = this.sign;
                if (eq(sign, '+')) {
                    sign = '';
                }
                return sign + this.unsignedInt10Value()
            },
            add: function (a) {
                notInstanceof(a, BigInteger, "param must be BigInteger object!");
                var aData = a.int10Value();
                var oData = this.int10Value();
                return new BigInteger(addInt10(aData, oData));
            },
            multiply: function (a) {
                notInstanceof(a, BigInteger, "param must be BigInteger object!");
                var aData = a.int10Value();
                var oData = this.int10Value();
                return new BigInteger(multiplyInt10(aData, oData));
            },
            substract: function (a) {
                notInstanceof(a, BigInteger, "param must be BigInteger object!");
                var aData = a.int10Value();
                var oData = this.int10Value();
                return new BigInteger(substractInt10(aData, oData));
            },
            divide: function (a) {
                notInstanceof(a, BigInteger, "param must be BigInteger object!");
                var aData = a.int10Value();
                var oData = this.int10Value();
                return new BigInteger(divideInt10(oData, aData));
            },
            mod: function (a) {
                notInstanceof(a, BigInteger, "param must be BigInteger object!");
                var aData = a.int10Value();
                var oData = this.int10Value();
                return new BigInteger(modInt10(oData, aData));
            },
            power: function (n) {
                //One:
                // var sum = BigInteger.ONE;
                // n = String(n);
                // for (var i = '0'; ltInt10(i, n); i = addInt10One(i)) {
                //     sum = sum.multiply(this);
                // }
                // return sum;
                //Two:
                return new BigInteger(powerInt10(this.int10Value(), String(n)));
            },
            negate: function () {
                return new BigInteger(
                    eq(this.sign, '-')
                        ?
                        '+' + this.unsignedInt10Value()
                        :
                        '-' + this.unsignedInt10Value());
            },
            addOne: function () {
                return this.add(BigInteger.ONE);
            },
            toString: function (r) {
                if (isNumber(r) && !eq(this.radix, r)) {
                    return this.intRadixValue(r);
                }
                return this.s;
            },
            // toJSON: function (r) {//JSON.stringify()!
            //     return this.toString(r);
            // }
        };
    
        impl(BigInteger, BigInteger_impl);
    
        var BigInteger_static_impl = {
            ZERO: new BigInteger('0'),
            ONE: new BigInteger('1'),
        };
        static_impl(BigInteger, BigInteger_static_impl);
    
    
    a = new xy.BigInteger('123')
    a.toString(26) //"4j"

    BigInteger

    展开全文
  • BigInteger加减乘除

    2019-04-24 10:26:39
    import java.math.BigInteger; import java.util.Arrays;... * public BigInteger add(BigInteger val): * public BigInteger subtract(BigInteger val): * public BigInteger multiply(BigInteger val):乘 *...
    import java.math.BigInteger;
    import java.util.Arrays;
     
    /*
     * public BigInteger add(BigInteger val):加
     * public BigInteger subtract(BigInteger val):减
     * public BigInteger multiply(BigInteger val):乘
     * public BigInteger divide(BigInteger val):除
     * public BigInteger[] divideAndRemainder(BingInteger val):返回商和余数的数组
     */
    public class BigIntegerDemo {
    	public static void main(String[] args) {
    		BigInteger bi1 = new BigInteger("999");
    		BigInteger bi2 = new BigInteger("50");
    		
    		//public BigInteger add(BigInteger val):加
    		System.out.println("add:"+bi1.add(bi2));
    		
    		//public BigInteger subtract(BigInteger val):减
    		System.out.println("subtract:"+bi1.subtract(bi2));
    		
    		//public BigInteger multiply(BigInteger val):乘
    		System.out.println("multiply:"+bi1.multiply(bi2));
    		
    		//public BigInteger divide(BigInteger val):除
    		System.out.println("divide:"+bi1.divide(bi2));
    		
    		//public BigInteger[] divideAndRemainder(BingInteger val):返回商和余数的数组
    		BigInteger[] bis = bi1.divideAndRemainder(bi2);
    		System.out.println("divideAndRemainder:"+Arrays.toString(bis));
    		System.out.println("商:"+bis[0]);
    		System.out.println("余数:"+bis[1]);
    	}
     
    }
     
    
    展开全文
  • BigInteger bg1 = new BigInteger("12345678912"); // int类型转BigInteger int value = 12345678912; BigInteger bg2 = BigInteger.valueOf(value); //1.加法 System.out.println(bg1.add(bg2)); ...
  • BigInteger add(BigInteger val) 返回两个大整数的和 BigInteger divide(BigInteger val) 返回两个大整数的商 BigInteger gcd(BigInteger val) 返回大整数的最大公约数 BigInteger max(BigInteger val) 返回两个大...
  • #include<iostream> #include<vector> #include<string> #include<algorithm>...struct BigInteger { static const int Base = 10000; static const int WIDTH = 4; ...
  • 这篇来了解和学习一下BigInteger类,我记得在Oracle面试的时候,被问过这个知识点。大致的问题就是,给两个很大的数,int类型存储不下,如何进行两个很大数的相减。当时的回答是,把这个字符串转成字符串数组,然后...
  • package big_num_operation...import java.math.BigInteger; public class Big_num { public byte[] mb_data; public String toString() { StringBuffer str = new StringBuffer(); if(mb_data[0]==1) ...
  • 运用BigInteger进行整数之间的高精度的加减乘除运算 一、acwing791. 高精度加法 给定两个正整数,计算它们的和。 输入格式 共两行,每行包含一个整数。 输出格式 共一行,包含所求的和。 数据范围 1≤整数长度≤...
  • 不用加减乘除做加法

    2019-09-07 20:26:32
    不用加减乘除做加法 写一个函数,求两个整数之和,要求在函数体内不得使用+、-、*、/四则运算符号 import java.math.BigInteger; public class Addition { public static void main(String[] args) { // TODO ...
  • 在我们平常做进制转换题目的时候,我们经常会想到先把数转换成十进制再转换成目标进制,然而这样只能应对小数据,对于大数据则得不到目标进制,这篇文章主要讲了BigInteger类的常用方法,其中就有大数据之间进制转换...
  • BigDecimal 加减乘除

    万次阅读 多人点赞 2013-10-09 21:05:04
    在java 里面,int 的最大值是:2147483647,现在如果想用比这个数大怎么办?...下载整理了一下BigDecimal 的加减乘除。。 BigDecimal bignum1 = new BigDecimal("10"); BigDecimal bignum2 = new BigDecimal
  • public class MyBigInteger { private StringBuffer data; public MyBigInteger(){ data = new StringBuffer("0"); ... public MyBigInteger(String str){ data = new StringBuffer(str);...
  • 大数的加减乘除

    2019-10-01 15:23:50
    = =用c做大数的题真是够够的了,跟着男神学了一下用Java做简单的加减乘除(即add,substract,multiply和divide),下面的代码是大数加法(多组输入)的代码。 import java.math.BigInteger; import java.util...
  • 大整数四则运算 BigInt 加减乘除 括号 优先级,Python支持无限精度的运行,Java有BigInteger类,但是对C和C++就只能自己实现,这是一个带加减乘除运算的实现。

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