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10 changes: 10 additions & 0 deletions number-of-1-bits/hozzijeong.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
/**
* @param {number} n
* @return {number}
*/
var hammingWeight = function(n) {
const binary = n.toString(2);


return binary.replaceAll('0','').length
};
11 changes: 11 additions & 0 deletions valid-palindrome/hozzijeong.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
/**
* @param {string} s
* @return {boolean}
*/
var isPalindrome = function(s) {
const lowercase = s.toLowerCase(); // 소문자로 변환
const replacedString = lowercase.replaceAll(/[^a-z0-9]/g,''); // 정규표현식을 통해 영어/숫자가 아닌 값들을 ''로 변환


return replacedString === [...replacedString].reverse().join('') // 기존 문자열과 그 값을 뒤집은 문자열이 같은지 비교
};