script.js

function checkInput() {
    var n = document.getElementById("person1").value;
    var m=document.getElementById("person2").value;
    if (n==="" || m===""){
        alert("Please enter both the names");
    }
    else if(n===m){
        alert("Please enter different names");
    }
    else{
        // var n = document.getElementById("person1").value;
        n=n.toLowerCase().replace(" ", "");
        // var m=document.getElementById("person2").value;
        m=m.toLowerCase().replace(" ", "");



        console.log(n);
        console.log(m);

        var game, unique;

        if (n.length < m.length) {
            unique = get_unique(n, m);
        }
        else if(n.length > m.length){
            unique = get_unique(m, n);
        }
        else{
            unique = get_unique(m, n);
        }

        console.log("unique : ", unique);
        if(unique===0){
            alert("No unique letters in the given names. Try entering different names");
        }
        else{
            findFlames(n,m,unique);
        }
    }
}
// -----------------------------------------------------------------


function resetStuff() {
    document.getElementById("person1").value = "";
    document.getElementById("person2").value = "";
    document.getElementById("result").innerHTML = "&nbsp;";
}
// -----------------------------------------------------------------
function get_unique(a, b) {
    var count;
    count = 0;

    for (var i = 0, _pj_a = a.length; i < _pj_a; i += 1) {
        for (var j = 0, _pj_b = b.length; j < _pj_b; j += 1) {
            if (a[i] === b[j]) {
                b = b.slice(0, j) + b.slice(j + 1);
                count += 1;
                break;
            }
        }
    }

    console.log("len a [Without Removing duplicates]", a.length);
    console.log("count", count);
    console.log("leb b [After Removing duplicates]", b.length);
    return a.length - count + b.length;
}
// ---------------------------------------------------------------
function findFlames(n,m,unique){
    var finalText="";
    game = "FLAMES";
    function findLEFT(unique, s, position) {
        var i, index;
        i = 0;
        index = -1 + position;

        while (i < unique) {
            index += 1;

            if (index === s.length) {
                index = 0;
            }

            i += 1;
        }

        if (i === unique) {
            return [s.slice(0, index) + s.slice(index + 1), index];
        }
    }
    var game, position;
    position = 0;
    console.log(`[${game}]`);
    while (game.length !== 1) {
        [game, position] = findLEFT(unique, game, position);
        console.log(`[${game}]`, position);
    }

    console.log("----------------");
    if (game === "F") {
        console.log("Friends.");
        // finalText += "Friends.";
        finalText += "Friends🫂";

    }
    else if(game === "L") {
        console.log("Love.");
        // finalText += "Love.";
        finalText += "Love ❤";
    }
    else if(game === "A") {
        console.log("Affection.");
        // finalText += "Affection.";
        finalText += "Affection 🥰";
    }
    else if(game === "M") {
        console.log("Marriage.");
        // finalText += "Marriage.";
        finalText += "Marriage  💍";
    }
    else if(game === "E") {
        console.log("Enemy.");
        // finalText += "Enemy.";
        finalText += "Enemy ⚔️";
    }
    else if(game === "S") {
        console.log("Sister.");
        // finalText += "Sister.";
        finalText += "Sister 👫";
    }

    document.getElementById("result").innerHTML = finalText;
}