题解 | #分隔符#
分隔符
https://www.nowcoder.com/practice/e5696992841841a8ab9d026324e4bb77
let flag = 0;
if (number < 0) { number = -number; flag = 1 };
let n = number + '';
let arr = n.split('');
arr.reverse();
let allArr = [];
for (let i = 0; i < arr.length / 3; i++) {
let nArr = arr.slice(3 * i, 3 * (i + 1));
nArr.reverse();
let nStr = nArr.join('');
allArr.push(nStr);
}
if (flag) return '-' + allArr.reverse().join(',');
else return allArr.reverse().join(',');
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