Question

How to check if each letter in a string maps to the first letter of a word in another string with JavaScript

Answer 1

function matchesPattern(pattern, sentence) {
    const words = sentence.trim().split(/\s+/);

    // Length mismatch → automatic failure
    if (pattern.length !== words.length) {
        return false;
    }

    // Compare each pattern character to the first letter of each word
    for (let i = 0; i < pattern.length; i++) {
        const p = pattern[i].toLowerCase();
        const w = words[i][0].toLowerCase();

        if (p !== w) {
            return false;
        }
    }

    return true;
}

const pattern = "jpcrg";
const sentence = "java python c rust go";

if (matchesPattern(pattern, sentence)) {
    console.log("Pattern matches!");
} else {
    console.log("Pattern does NOT match.");
}




/*
run:

Pattern matches!

*/

 

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