JS: Comparing Strings

compareStrings.js

// Compare TWO strings and return TRUE if the 2nd String
// only requires one change to match the original string.
// Otherwise return FALSE.

const compareStrings = (orig, diff) => {
    let count = 0

    diff.split('').map(char => {
        const match = orig.split('').find(i => i === char)

        if (match !== undefined) {
            count += 1
        }
    })

    return (count === (orig.length - 1)) ? true : false
}

console.log(compareStrings('make', 'rake')) // true
console.log(compareStrings('make', 'mke'))  // true
console.log(compareStrings('make', 'ake'))  // true
console.log(compareStrings('make', 'ekam')) // false
console.log(compareStrings('make', 'make')) // false
console.log(compareStrings('make', 'rare')) // false
console.log(compareStrings('make', 'ke'))   // false
console.log(compareStrings('make', 'ma'))   // false