Question

使用0-9，A-Z和a-x作为数字，将十进制数字（十进制）转换为六十进制（六十进制）的最佳方法是什么。

我打算用javascript编写代码，但感谢任何帮助。

用法示例：

>>decToSex(60);
"10"
>>decToSex(123);
"23"
>>decToSex(1000000);
"4bke"
>>decToSex(1234567.89);
"5gu7.rO"

我使用的最终代码，基于Paolo的回答：

var decToSex = function(){
    var decToSexMap = ['0','1','2','3','4','5','6','7','8','9',
            'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
            'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x'];

    return function(number){

        var negative = '';
        if (number < 0){
            var negative = '-';
        }

        number = number.toString().split('.');
        var integer = Math.abs(number[0]);
        var fraction = number[1];
        var result = '';

        do {
            result = decToSexMap[integer % 60] + result;
            integer = parseInt(integer / 60);
        } while (integer > 0);

        if (fraction){
            var decimalPlaces = fraction.toString().length;
            result += '.';
            fraction = parseFloat('.' + fraction);

            var x = 0;
            do {
                x++;
                var res = (fraction * 60).toString().split('.');
                result = result + decToSexMap[res[0]];

                if (res[1]) {
                    fraction = parseFloat('.' + res[1]);
                }
                else {
                    break;
                }
            } while (x < decimalPlaces);
        }
        return negative + result;
    }
}();

Answer 1

这适用于提供的测试数据，但您可能希望对其进行更多测试：

<script>
var convert = new Array(0,1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','I','J','K',
                       'L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a',
                       'b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q',
                       'r','s','t','u','v','w','x');

function decToSex(num) {
    var extract = num.toString().split('.');
    num = extract[0];
    var pieces = new Array();
    do {
        pieces.push(convert[num % 60]);
        num = parseInt(num/60);
    } while (num > 0);
    pieces = pieces.reverse();
    var rem = extract[1];
    if(rem) {
        rem = parseFloat('.' + rem);
        var x = 0;
        var dec = new Array();
        do {
            x++;
            var res = (rem * 60).toString().split('.');
            dec.push(convert[res[0]]);
            if(res[1]) {
                rem = parseFloat('.' + res[1]);
            } else {
                break;
            }
        } while (x < 3); // work up to 3 decimal places, change for more.
    }
    var myResult = pieces.join('');
    if(dec) {
        myResult += '.' + dec.join('');
    }
    return myResult;
}

alert(decToSex(60));
alert(decToSex(123));
alert(decToSex(1000000));
alert(decToSex(1234567.89));
</script>

Answer 2

对于它的价值，这里是对转换为最多64个基础的解决方案的修改：

// Convert decimal into a base between 2 and 64
var decToBase = function() {
    var decToBaseMap = [
        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
        'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'Y', 'Z',
        '+', '/'];

    return function(number, base) {

        if (base < 2 || base > 64) {
            return "#base should be between 2 and 64#";
        }

        var negative = '';
        if (number < 0) {
            negative = '-';
        }

        number = number.toString().split('.');
        var integer = Math.abs(number[0]);
        var fraction = number[1];
        var result = '';

        do {
            result = decToBaseMap[integer % base] + result;
            integer = parseInt(integer / base, 10);
        } while (integer > 0);

        if (fraction) {
            var decimalPlaces = fraction.toString().length;
            result += '.';
            fraction = parseFloat('.' + fraction);

            var x = 0;
            do {
                x++;
                var res = (fraction * base).toString().split('.');
                result = result + decToBaseMap[res[0]];

                if (res[1]) {
                    fraction = parseFloat('.' + res[1]);
                }
                else {
                    break;
                }
            } while (x < decimalPlaces);
        }
        return negative + result;
    };
}();

alert(decToBase(2011, 64)); // displays "VR"

你可以在这里玩它： http://jsfiddle.net/kaicarver/d3Zn2/

Answer 3

重复将其除以60，直到你为零。每次，获取模数，并将其转换为适当的字符，并将其添加到输出字符串。

编辑：对于小数，请说您正在搜索最多3个60位的地方：

从0.98765（基数10）开始

0.98765 * 60 -> 59.259 -> first post-decimal character is 59 converted to its 60decimal character, then carry the .259
.259 * 60 -> 15.54 -> second char is 15 converted to its 60decimal character, then carry the .54
.54 * 60 -> 32.4 -> round it this time (its the last char) -> last char is 32 as its 60dec char

因此0.98765（基数10）变为0. [59] [15] [32]（基数60）

Answer 4

首先将数字拆分为整数和小数部分。

对于整数部分，取模数拉出最低有效数字，然后除以60并重复。

对于小数部分，重复乘以60并取整数部分得到结果数字。如果你最终得到零，这是不可能的，你就完成了。您提取一定数量的数字后，您可能希望终止。

在javascript中将小数转换为sexagesimal（基数为60）

4 个答案: