How to check if two char values in Array are the same?

Question

I have a given char array and have to remove the duplicate letters in it. How can I do this in Java?

Example:

Given char array:

char[] s = { 'H','e','l','l','o','W','o','r','l','d','!'};

Expected result:

char[] s = { 'H','e','l','o','W','r','d','!'};

I only wrote for(int i=0; i – Galina Vasileva Nov 25 '18 at 10:47 — Galina Vasileva, Nov 25 '18 at 10:47
I am not allowed to and don't know how they work anyway – Galina Vasileva Nov 25 '18 at 10:50 — Galina Vasileva, Nov 25 '18 at 10:50

score 1 · Accepted Answer · answered Nov 25 '18 at 10:55

1

You can remove duplicates like this and get a new char array,

public class Main {
    public static void main(String[] args) {
        char[] array = {'H', 'e', 'l', 'l', 'o', 'W', 'o', 'r', 'l', 'd', '!'};
        String temp = "";
        for (int i = 0; i < array.length; i++) {
            if (temp.indexOf(array[i]) == -1)
                temp = temp + array[i];
        }
        char[] reslut = temp.toCharArray();
    }
}

answered Nov 25 '18 at 10:55

Sandeepa

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The answer is correct. I believe the asker would learn more from more explanation and less code. – Ole V.V. Nov 25 '18 at 11:52

How to check if two char values in Array are the same?

1 Answers1