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SimplePigLatin.java
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SimplePigLatin.java
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package main.java.kyu5;
/**
* 5 kyu - Simple Pig Latin
* <p>
* https://www.codewars.com/kata/520b9d2ad5c005041100000f
* <p>
* Details:
* <p>
* Move the first letter of each word to the end of it,
* then add "ay" to the end of the word. Leave punctuation marks untouched.
*/
import org.junit.Test;
import java.util.regex.Pattern;
import static org.junit.Assert.assertEquals;
public class SimplePigLatin {
public static String pigIt(String str) {
if (str == null || str.length() == 0) {
return null;
}
final String[] words = str.split("\\s");
final StringBuilder sb = new StringBuilder();
for (String s : words) {
if (Pattern.matches("\\p{IsPunctuation}", s)) {
sb.append(s)
.append(" ");
} else {
sb.append(s.substring(1))
.append(s.charAt(0))
.append("ay ");
}
}
while (sb.charAt(sb.length() - 1) == ' ') {
sb.setLength(sb.length() - 1);
}
return new String(sb);
}
@Test
public void fixedTests() {
assertEquals("igPay atinlay siay oolcay", pigIt("Pig latin is cool"));
assertEquals("hisTay siay ymay tringsay", pigIt("This is my string"));
}
}