This program counts the number of repeating characters in a given string.

• Iterate through each character in the string

• Use a hash map to store the count of each character

• If a character is already presen...read more

Try using a hashmap :

HashMap<Character,Integer> map=new HashMap<Character,Integer>();

String str="abababaccdef";

int len=str.length();

for(int i=0;i<=len-1;i++)

{

if(map.containsKey(str.charAt(i)))

{

...read more