js regex match all white spaces All In One

js regex match all white spaces All In One

const str = `abc xyz ufo`;

// regex to remove spaces
str.replace(/\s/g, '');
// 

// regex only letters not spaces

const reg = /^[A-Za-z]+$/;

demo

/**
 * @param {string} s
 * @return {string}
 */
var replaceSpace = function(s) {
  // return s.replaceAll(/ /g, '%20')
  // return s.replaceAll(/\s/g, '%20')
  // return s.split(' ').join('%20');
  let r = '';
  for(let c of s) {
    r += (c === ' ') ? '%20' : c;
  }
  return r;
};

https://leetcode.cn/leetbook/read/illustration-of-algorithm/50ywkd/

https://leetcode.cn/submissions/detail/324000591/

LeetCode 经典面试题目清单

初级算法 - 帮助入门
https://leetcode.cn/leetbook/detail/top-interview-questions-easy/

中级算法 - 巩固训练
https://leetcode.cn/leetbook/detail/top-interview-questions-medium/

高级算法 - 提升进阶
https://leetcode.cn/leetbook/detail/top-interview-questions-hard/

refs

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