Delete repeated characters from two strings in java


In this core java programming tutorial we will Write a program to delete repeated characters from two strings in java.

Take two Strings, compare them and delete repeated characters from two strings, when a match is found in the other string.



Example 1 in java>
s1 = abc , s2 = cde
Modified s1 = ab,  Modified s2 = de

If you notice above example  ‘c’ was common character and has been deleted from both strings.

Example 2 in java>
s1 = abc@ , s2 = cd@e
Modified s1 = ab,  Modified s2 = de

If you notice above example  ‘c’ and ‘@’ were common characters and both has been deleted from both strings.

Example 3 in java>
s1 = aBc , s2 = bcde
Modified s1 = a,  Modified s2 = de

If you notice above example  ‘b’ and ‘c’ were common characters and both has been deleted from both strings. We don’t care about case sensitivity.



Program/ example to delete repeated characters from two strings in java >
public class DeleteRepetaedCharacterFromBothStringsExample {
   public static void main(String[] args) {
          String s1 = "aBc";
          String s2 = "bcde";
          System.out.println("s1 = " + s1 + " , s2 = " + s2);
          char ar1[] = s1.toCharArray();
          char ar2[] = s2.toCharArray();
          for (int i = 0; i < ar1.length; i++) {
                 boolean bMatch = false;
                 for (int j = 0; j < ar2.length; j++) {
                       if ((String.valueOf(ar1[i])).toLowerCase().equals(
                                     ((String.valueOf(ar2[j])).toLowerCase()))) {
                              bMatch = true;
                              break;
                       }
                 }
                 if (bMatch) {
                       s1 = s1.replaceAll(String.valueOf(ar1[i]).toUpperCase(), "");
                       s1 = s1.replaceAll(String.valueOf(ar1[i]).toLowerCase(), "");
                       s2 = s2.replaceAll(String.valueOf(ar1[i]).toLowerCase(), "");
                       s2 = s2.replaceAll(String.valueOf(ar1[i]).toUpperCase(), "");
                 }
          }
          System.out.println("Modified s1 = " + s1 + ",  Modified s2 = " + s2);
   }
}
/*output
s1 = abc , s2 = cde
Modified s1 = ab,  Modified s2 = de
*/


So in this core java programming tutorial we Wrote a program to delete repeated characters from two strings in java.


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