Numbers (JS Exam)

function solve(args) {
    var inputString = args[0];
    var pattern = /\d+/g;
    var results = [];
    while ((arr = pattern.exec(inputString)) !== null) {
            results.push(arr[0]);
    }
    var collection = [];
    for (var i in results) {
        var tempNum = parseInt(results[i]);
        var tempNumInHex = tempNum.toString(16).toUpperCase();
        if (tempNumInHex.length < 4) {
            var tempArr = [];
            for (var i = 0; i < 4 - tempNumInHex.length; i = i+1) {
                tempArr.push('0');
            }
            tempArr.push(tempNumInHex);
            var final = tempArr.join('');
            collection.push('0x' + final);
        }
        else {
            collection.push('0x' + tempNumInHex);
        }
    }
    var finishedString = collection.join('-');
    console.log(finishedString);
}

/*solve(['5tffwj(//*7837xzc2---34rlxXP%$”']);
solve(['482vMWo(*&^%$213;k!@41341((()&^>><///]42344p;e312']);
solve(['20']);*/