NonDuplicateCharInString

 

package Interview;

 

import java.util.ArrayList;

 

public class uniqueChar {

 

       public static void main(String[] args) {

            

             String name = "aaddjlsjjllareer";

             int nameLgth = name.length();

             String charAti ;

             String charAtj ;

             int count;

             ArrayList<String> alist = new ArrayList<>();

             ArrayList<String> blist = new ArrayList<>();

             ArrayList<String> clist = new ArrayList<>();

             for(int i=0;i<nameLgth;i++) {

                     charAti = Character.toString(name.charAt(i));

                           count=0;

                           for(int j=0;j<nameLgth;j++) {

                                  charAtj = Character.toString(name.charAt(j));

                                  if(charAti.equals(charAtj)) {

                                         count++;

                                  }

                                  

                     

             }

                           alist.add(Integer.toString(count).concat(charAti));

                           blist.add(Integer.toString(count));

                           clist.add(charAti);

 

 

       }

             System.out.println("alsit is "+  alist); //[3a, 3a, 2d, 2d, 3j, 3l, 1s, 3j, 3j, 3l, 3l, 3a, 2r, 2e, 2e, 2r]

             System.out.println("blsit is "+  blist); //[3, 3, 2, 2, 3, 3, 1, 3, 3, 3, 3, 3, 2, 2, 2, 2]

             System.out.println("clsit is "+  clist); //[a, a, d, d, j, l, s, j, j, l, l, a, r, e, e, r]

             String uniqueElement = null;

             for(int i=0;i<nameLgth;i++) {

                   

                    String uniqueNum = blist.get(i);

                    if(uniqueNum.equals("1")){

                           uniqueElement = clist.get(i);

                    }

             }

             System.out.println("Unique Element is "+       uniqueElement);

 

}}

 

Output:

alsit is [3a, 3a, 2d, 2d, 3j, 3l, 1s, 3j, 3j, 3l, 3l, 3a, 2r, 2e, 2e, 2r]

blsit is [3, 3, 2, 2, 3, 3, 1, 3, 3, 3, 3, 3, 2, 2, 2, 2]

clsit is [a, a, d, d, j, l, s, j, j, l, l, a, r, e, e, r]

Unique Element is s