I made the "Sunshine Ikezaki game" I saw on Twitter in Java.

When such a tweet came to TL, I felt the atmosphere of Zundokokiyoshi, so I implemented it in Java.

Musume I thought about the game with 5 years old. The title is "Sunshine Ikezaki Game". The rules are simple. If you sing a song and get "i", just change it to "yes!". Musume 5 years old "Big old-fashioned Yeah !, Uncle Yeah! San's Toke Yeah !!" I laughed. https://twitter.com/ziuziu/status/918070729341587457

As a specification -If there is "i" or "i" in the entered character string, replace it with "yes". ・ If "i" and "i" are consecutive, replace the second and subsequent times with "-".

Click here for its implementation Maybe it was because I made it at the end of work. It's a pretty dirty code, but ... (~~ This is your ability ~~)

import java.util.Arrays;

public class Yeah {
     *If "i" or "i" matches the entered character string, replace it with "yes".
     *However, if it is continuous, replace it with "-" from the second time onward.
    public String convert(String text) {
        boolean alwaysHit = false;
        String[] hit = {"I", "I"};
        String[] strArray = toArray(text);
        for (int i = 0; i <= strArray.length - 1; i++) {
            if (Arrays.asList(hit).contains(strArray[i])){
                if (alwaysHit == false) {
                    strArray[i] = "Yeah";
                    alwaysHit = true;
                } else {
                    strArray[i] = "-";
                alwaysHit = false;
        return Arrays.toString(strArray).replace(" ", "").replace(",", "").replace("[", "").replace("]", "");

    private String[] toArray(String str) {
        String[] returnStr = new String[str.length()];
        //Turn by the length of the variable str
        for (int i = 0; i <= str.length() - 1 ; i++) {
            //Store in sequence in an array
            returnStr[i] = String.valueOf(str.charAt(i));
        return returnStr;

Write the following test code and execute the above code

import static org.junit.Assert.*;

import org.junit.Test;

public class YeahTest {

	public void testConverter() {
		Yeah yeah = new Yeah();
		assertEquals("Yeah yeah yeah yeah yeah", yeah.convert("Good good good yeah yeah yeah good"));
		assertEquals("Yeah yeah yeah yeah yeah yeah yeah yeah yeah", yeah.convert("Yeah yeah yeah yeah yeah yeah"));
		assertEquals("Singing Yen Finity", yeah.convert("Singing Infinity"));


image.png I've done what I want to do, so now ... I'm going to sleep. (˘ω˘) Sue

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