To Find Non Repeat characters in a string and test using junits

/**
 * To Find the K th non repeated value in a String
 *
 * input hello 3
 * output o
 */
package com.cfed.tutorials;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author KonzernTechies
 *
 *         Vishnu prasad varma
 *
 */
public class NonRepeatedElements {

public char findNonRepeatElement(String inputStr, int k) {


// Scanner sc = new Scanner(System.in);
// String inputStr = "hello";
// int k = 3;

Map<Character, Integer> varCountMap = new HashMap<>();
List<Character> nonRepeatChar = new ArrayList<>();

int len = inputStr.length();

for (int i = 0; i < len; i++) {
Character thisChar = inputStr.charAt(i);
int count = 1;
if (varCountMap.get(thisChar) != null) {
count = varCountMap.get(thisChar);
count = count + 1;
varCountMap.put(thisChar, count);
if (nonRepeatChar.contains(thisChar))
nonRepeatChar.remove(thisChar);

} else {
varCountMap.put(thisChar, count);
nonRepeatChar.add(thisChar);
}
}

System.out.println(nonRepeatChar.get(k - 1));

return nonRepeatChar.get(k - 1);
}


}

Test Class

/**

 * 

 */

package com.cfed.tutorials;

import static org.junit.Assert.assertEquals;

import org.junit.jupiter.api.Test;

/**

 * @author Ranjini Raj

 *

 */

public class NonRepeatElementsTest {

  @Test

    public void multiplicationOfZeroIntegersShouldReturnZero() {

        

        NonRepeatedElements tester = new NonRepeatedElements();

        // assert statements

        assertEquals('o', tester.findNonRepeatElement("hello", 3));

        assertEquals('d', tester.findNonRepeatElement("aabbccd", 1));

    }

}

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