Reverse Words in a String II

Description

null

Solution(javascript)

/**
 * @param {character[]} s
 * @return {void} Do not return anything, modify s in-place instead.
 */
const reverseWords = function (s) {
  let start = null
  let end = null

  const reverse = (i, j) => {
    while (i < j) {
      const temp = s[i]
      s[i] = s[j]
      s[j] = temp
      i++
      j--
    }
  }
  for (let i = 0; i < s.length; i++) {
    if (s[i] !== ' ' && start === null) {
      start = i
    }
    if (s[i + 1] === ' ' || s[i + 1] === undefined) {
      end = i
      reverse(start, end)
      start = null
      end = null
    }
  }
  return s.reverse()
}