1
/**
2
 * @param {string} s
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 * @param {character} c
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 * @return {number[]}
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 */
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var shortestToChar = function (s, c) {
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  let result = [];
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  for (let i = 0; i < s.length; i++) {
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    if (s.charAt(i) === c) result.push(0);
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    else {
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      const next = s.indexOf(c, i) === -1 ? Infinity : s.indexOf(c, i) - i;
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      const prev =
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        result.lastIndexOf(0) === -1 ? Infinity : i - result.lastIndexOf(0);
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      result.push(Math.min(next, prev));
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    }
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  }
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  return result;
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};