fix-string-case.js

// In this Kata, you will be given a string that may have mixed uppercase 
// and lowercase letters and your task is to convert that string to either 
// lowercase only or uppercase only based on:

// make as few changes as possible.
// if the string contains equal number of uppercase and lowercase letters, 
// convert the string to lowercase.
// For example:

// solve("coDe") = "code". Lowercase characters > uppercase. Change only the "D" to lowercase.
// solve("CODe") = "CODE". Uppercase characters > lowecase. Change only the "e" to uppercase.
// solve("coDE") = "code". Upper == lowercase. Change all to lowercase.

function solve(s) {
    let capitalCount = 0
    for (let i = 0; i < s.length; i++) {
        if (s[i] === s[i].toUpperCase()) {
            capitalCount++;
        }
    }
    const halfLength = s.length / 2;
    if (capitalCount > halfLength) {
        return s.toUpperCase();
    } else {
        return s.toLowerCase();
    }
}

result = solve('CODe');

console.log(result);