How to find duplicate characters in a string using java

String a="abcdef";
String b="dghijk";
String c= "lmnopa"; can any one help me from these 3 strings to be compared and find duplicates in java8

Clean nhi dikh raha h

Thank you sir.

Need to explain How it works that's the important

Fucking no one tell what happen when that duplicate value come more than twice . Ignorance

Good but You have explain more you just going on by writing the code who wil understand

More Optimised Code:

public class Repeated {
public static void main(String[] args) {
String name = "Rahaman";
int count;
char ch [] = name.toCharArray();
for (int i = 0; i <name.length() ; i++) {
count =1;
for (int j = i+1; j < name.length(); j++) {
if (ch[i] == ch[j] && ch[i] != ' ') {
count++;
ch[j] = '0';
}
}

if(count> 0 && ch[i] !='0'){
System.out.print(" " + ch[i] );
}

}

}
}

Time complexity is o(n^2),which is bad, instead you can use hashmap with key as char and value as counter

It's not working

how to find frequency of this duplicate characters??

Very nice bro keep it up very sort and simple

Thanks its useful ....❤but Try to give Explaination also because it will be more helpful for beginners who they are doing coding.....

wrong code

Hey in this..if there are multiple characters like greater than 2 ,it will not work

You simply writing program, you should trace code and explain it.

This is wrong
sir

short and simple solution, keep go on....

Chutiye agr array me hi convert krna hota to hum string ka kyo search krte

Chala baga explain chesaru sir 🙏

Hello sir.. It will not work when one character occurs more than two times i.e sillypointspider, o/p will come as i print two times instead of 1 coz it occured 3 times in a string and will satisfy the condition of second loop also.

This program doesn't work well with string "Hello Beautiful" ??

if i am giving input string "saraswati" the Above code is not working ,o/p should be s a but o/p coming s a a

Suppose take input string as "i am going to gym".
Above code is not working.
Actual O/P: i m g o g
Expect o/p should be : i m g o

Thanks,
Sruti

THanks Buddy :)

Excellent !!!