package main
import (
"fmt"
)
// 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.
// ------------------------------------------------------------
// Convert a single leet character into a normal alphabet letter
// ------------------------------------------------------------
func decodeChar(c rune) rune {
table := map[rune]rune{
'7': 'T',
'1': 'I',
'5': 'S',
'3': 'E',
'4': 'A',
'0': 'O',
}
if v, ok := table[c]; ok {
return v
}
return c // keep letters like H, M, G, etc.
}
// ------------------------------------------------------------
// Convert an entire string from leet speak to normal text
// ------------------------------------------------------------
func decodeLeetSpeak(s string) string {
out := make([]rune, 0, len(s))
for _, c := range s {
out = append(out, decodeChar(c))
}
return string(out)
}
func main() {
// Test lines provided by the user
lines := []string{
"7H15 M3554G3",
"53RV35 7O PR0V3",
"H0W 0UR M1ND5 C4N",
"D0 4M4Z1NG 7H1NG5!",
"1MPR3551V3 7H1NG5!",
"1N 7H3 B3G1NN1NG",
"17 WA5 H4RD BU7",
"N0W, Y0UR M1ND 1S",
"R34D1NG 17",
"4U70M471C4LLY.",
}
// Decode and print each line
for _, line := range lines {
fmt.Println(decodeLeetSpeak(line))
}
}
/*
run:
THIS MESSAGE
SERVES TO PROVE
HOW OUR MINDS CAN
DO AMAZING THINGS!
IMPRESSIVE THINGS!
IN THE BEGINNING
IT WAS HARD BUT
NOW, YOUR MIND IS
READING IT
AUTOMATICALLY.
*/
