// 7H15 M3554G3 is written in leet speak, where numbers resemble letters.
// place each leetspeak character with its matching letter
// (7 -> T, 1 -> I, 5 -> S, 3 -> E) and build a new string
// 7H15 -> THIS | M3554G3 -> MESSAGE
// Your brain can interpret distorted or number‑substituted letters
// surprisingly well because it recognizes the overall word
// shapes and patterns, not just individual characters.
import java.util.HashMap;
public class LeetToText {
public static String leetToText(String s) {
HashMap<Character, Character> map = new HashMap<>();
map.put('7', 'T');
map.put('1', 'I');
map.put('5', 'S');
map.put('3', 'E');
map.put('4', 'A');
map.put('0', 'O');
StringBuilder out = new StringBuilder(s.length());
for (char c : s.toCharArray()) {
if (map.containsKey(c))
out.append(map.get(c));
else
out.append(c); // keep letters like H, M, G
}
return out.toString();
}
public static void main(String[] args) {
String input = "7H15 M3554G3";
System.out.println(leetToText(input));
}
}
/*
run:
THIS MESSAGE
*/
