Shoeb Mirza creativemind1
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creativemind1
/ countFrequencyOfEachCharacter.js
Created
May 22, 2026 10:12
Count Frequency of Each Character in a String
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| function countLetters(str) { | |
| const smallString = str.toLowerCase(); | |
| const obj = {}; | |
| for (let i = 0; i < smallString.length; i++) { | |
| if (obj[smallString[i]]) { | |
| obj[smallString[i]] += 1; | |
| } else { | |
| obj[smallString[i]] = 1; | |
| } | |
| } |
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| //Hash Method: | |
| function twoSum(nums, target) { | |
| const map = new Map(); // Stores value -> index | |
| for (let i = 0; i < nums.length; i++) { | |
| const complement = target - nums[i]; | |
| if (map.has(complement)) { | |
| return [map.get(complement), i]; // Found the two indices |