557. Reverse Words in a String III

Problem

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:

Input: "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"

Note: In the string, each word is separated by single space and there will not be any extra space in the string.

Solution

/**
 * @param {string} s
 * @return {string}
 */
var reverseWords = function(s) {
  return s.split(' ').map(reverse).join(' ');
};

var reverse = function (word) {
  var len = word.length;
  var res = '';
  for (var i = 0; i < len; i++) {
    res += word[len - i - 1];
  }
  return res;
};

Explain:

nope.

Complexity:

• Time complexity :
• Space complexity :