让我们编写一个函数，将一个字符串的所有排列作为数组返回。由于您不需要任何全局变量，因此返回排列至关重要。
function permut(string) { if (string.length < 2) return string; // This is our break condition var permutations = []; // This array will hold our permutations for (var i = 0; i < string.length; i++) { var char = string[i]; // Cause we don't want any duplicates: if (string.indexOf(char) != i) // if char was used already continue; // skip it this time var remainingString = string.slice(0, i) + string.slice(i + 1, string.length); //Note: you can concat Strings via '+' in JS for (var subPermutation of permut(remainingString)) permutations.push(char + subPermutation) } return permutations;}要打印它们，之后只需遍历数组即可：
var myString = "xyz"; permutations = permut(myString); for (permutation of permutations) print(permutation) //Use the output method of your choice
希望我能帮助您解决您的问题。
