Question

How to check if two equal-length strings are at least 50% equal in JavaScript

Answer 1

function are50PercentEqual(str1, str2) {
    if (str1 === null || str2 === null || str1.length !== str2.length) {
        return false;
    }

    let matchingChars = 0;

    for (let i = 0; i < str1.length; i++) {
        if (str1[i] === str2[i]) {
            matchingChars++;
        }
    }

    return (matchingChars / str1.length) >= 0.5;
}


const str1 = "javascript c# c++ c python";
const str2 = "javascript c# r c rust sql";

if (are50PercentEqual(str1, str2)) {
    console.log("yes");
} else {
    console.log("no");
}



/*
run:

yes

*/

 

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