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valid-anagram solution
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valid-anagram/moonjonghoo.js

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/**
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* @param {string} s
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* @param {string} t
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* @return {boolean}
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*/
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var isAnagram = function (s, t) {
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if (s.length !== t.length) return false;
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let hashMap = new Map();
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for (let i = 0; i < s.length; i++) {
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if (hashMap.has(s[i])) {
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hashMap.set(s[i], hashMap.get(s[i]) + 1);
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} else {
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hashMap.set(s[i], 1);
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}
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}
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for (let i = 0; i < t.length; i++) {
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if (hashMap.has(t[i])) {
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hashMap.set(t[i], hashMap.get(t[i]) - 1);
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if (hashMap.get(t[i]) === 0) {
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hashMap.delete(t[i]);
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}
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}
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}
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if (hashMap.size === 0) return true;
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else return false;
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};
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isAnagram("anagram", "nagaram");

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