心宽体胖之军师

https://leetcode-cn.com/problems/shuffle-string/class Solution { public String restoreString(String s, int[] indices) { char[] a = s.toCharArray(); char[] b = new char[a.length]; int j = 0; for (int i : indices) { b[i] = a[j]; .

https://leetcode-cn.com/problems/string-to-url-lcci/class Solution { public String replaceSpaces(String S, int length) { S = S.substring(0, length)replace(" ", "%20"); return S; }}class Solution { public String replace.