Java String Exercises: Find first non repeating character in a string

Java String: Exercise-39 with Solution

Write a Java program to find first non repeating character in a string.

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.*;
public class Main {
 public static void main(String[] args) {
  String str1 = "gibblegabbler";
  System.out.println("The given string is: " + str1);
  for (int i = 0; i < str1.length(); i++) {
   boolean unique = true;
   for (int j = 0; j < str1.length(); j++) {
    if (i != j && str1.charAt(i) == str1.charAt(j)) {
     unique = false;
     break;
    }
   }
   if (unique) {
    System.out.println("The first non repeated character in String is: " + str1.charAt(i));
    break;
   }
  }
 }
}

Sample Output:

The given string is: gibblegabbler
The first non repeated character in String is: i

Flowchart:

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