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GeezerVison is showing github.com — JavaProgramming/Recursion/RemoveDuplicateStr.java at main · karterhhgg/JavaProgramming Expand file tree/ Copy pathRemoveDuplicateStr.javaMore file actions 24 lines (24 loc) · 806 Bytes / Copy pathRemoveDuplicateStr.javaFile metadata and controls24 lines (24 loc) · 806 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 // Remove duplicates in a string. // time complexity = O(n) package Recursion; public class RemoveDuplicateStr { public static boolean [] map = new boolean [26]; // size 26 liye hai kyon ki alphabet 26 hota h public static void removeDuplicate(String str, int idx, String newStr){ if(idx == str.length()){ System.out.println(newStr); return; } char currChar = str.charAt(idx); if(map[currChar - 'a'] == true){ removeDuplicate(str, idx+1, newStr); } else{ newStr += currChar; map[currChar - 'a'] = true; removeDuplicate(str, idx+1, newStr); } } public static void main(String[] args) { String str = "abbccda"; removeDuplicate(str, 0, ""); } } |
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