How to count duplicate characters from a sentence in java
Output : DuplicateCharacter .java package com.swain.cell; import java.util.HashMap; public class DuplicateCharacter { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String str = "Character duplicate word example java" ; char ch1[]=str.toCharArray(); HashMap<Character,Integer> hm= new HashMap<Character,Integer>(); for ( int i=0; i<ch1. length ; i++) { char ch=ch1[i]; ...



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