Question

How to count the occurrences of each letter in char array with Node.js

Answer 1

function countLetterOccurrences(charArray) {
    const letterCounts = {};
 
    charArray.forEach(char => {
        if (letterCounts[char]) {
            letterCounts[char]++;
        } else {
            letterCounts[char] = 1;
        }
    });
 
    return letterCounts;
}
 
const charArray = ['n', 'o', 'n', 'c', 'd', 'c', 'e', 'f', 'e', 'n'];
 
const result = countLetterOccurrences(charArray);
 
console.log(result); 
 
  
     
/*
run:
 
{ n: 3, o: 1, c: 2, d: 1, e: 2, f: 1 }
 
*/

 

70+ SQL courses for beginners and professionals