Question

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

Answer 1

function matchesPattern(pattern: string, sentence: string): boolean {
    const words: string[] = 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: number = 0; i < pattern.length; i++) {
        const p: string = pattern[i].toLowerCase();
        const w: string = words[i][0].toLowerCase();

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

    return true;
}

function main(): void {
    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.");
    }
}

main();




/*
run:

"Pattern matches!" 

*/

 

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