leetCode-06 《Z字型输出》

Z字型输出

var convert = (s, rows) => {
  if (rows === 1) return s

  const row = new Array(rows).fill('')
  
  const cutNum = 2 * rows - 2
  
  for (let i = 0; i < s.length; i++) {
    const x = i % cutNum
    row[Math.min(x, cutNum - x)] += s[i]
  }

  return row.join('')
}