在javascript中将小数转换为sexagesimal(基数为60) [英] Converting decimals to sexagesimal (base sixty) in javascript
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问题描述
使用0-9,AZ和ax作为数字将十进制数字(十进制)转换为六十进制数(基数为六十)的最佳方法是什么。
What is the best way to convert decimal numbers (base ten) to sexagesimal (base sixty) represented as a string using 0-9, A-Z and a-x as the digits.
我打算在javascript中对其进行编码,但感谢任何帮助。
I'm planning to code it in javascript but any help is appreciated.
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:
The final code I used, based on Paolo's answer:
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;
}
}();
推荐答案
这适用于提供的测试数据,但你可能想要对它进行更多测试:
This works with the test data provided, but you probably wanna run a few more tests on it:
<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>
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