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  1. var str = 'Hello world';
  2. var letters = {'a':'4', 'e':'3','o':'0'};
  3. for (var letter in letters) {
  4. var regex = new RegExp(letter, 'g');
  5. str = str.replace(regex, letters[letter]);
  6. }
  7. print(str);
Success #stdin #stdout 0.01s 171776KB
stdin
1
2
10
42
11
stdout
H3ll0 w0rld