Q.

Character recognition software is widely used to digitise printed texts. Thus the texts can be edited, searched and stored on a computer.

When documents (especially pretty old ones written with a typewriter), are digitised character recognition softwares often make mistakes.

Your task is correct the errors in the digitised text. You only have to handle the following mistakes:

S is misinterpreted as 5
O is misinterpreted as 0
I is misinterpreted as 1
The test cases contain numbers only by mistake.

A)

function correct(string) {
  const mistake = {5: 'S', 0: 'O', 1: 'I'}
  const fix = function(str) {
    return str in mistake ? mistake[str] : str;
  }
  return string.split('').map(fix).join('');
}

오늘 배운거 때려 박았다 ㅋ ㅋ ㅋ ㅋ