题解 | #字符串的排列#
字符串的排列
https://www.nowcoder.com/practice/fe6b651b66ae47d7acce78ffdd9a96c7
function Permutation(str) { // write code here if (str.length <= 1) return [str] const result = [] const items = str.split('') const current = items.shift() const subResult = Permutation(items.join('')) for (let i = 0; i <= items.length; i++) { for (let j = 0; j < subResult.length; j++) { const currentSubItem = subResult[j].split('') currentSubItem.splice(i, 0, current) const currentStr = currentSubItem.join('') result.push(currentStr) } } const res = new Set(result) return Array.from(res) } module.exports = { Permutation : Permutation };