package com.fishercoder.solutions; public class _2109 { public static class Solution1 { public String addSpaces(String s, int[] spaces) { StringBuilder sb = new StringBuilder(); for (int i = 0, j = 0; i < s.length(); i++) { if (j < spaces.length && i == spaces[j]) { sb.append(" "); j++; } sb.append(s.charAt(i)); } return sb.toString(); } } }