hashes

function SimpleHash(str) {
    var hash = 0;

    for (var i = 0; i < str.length; i++){
        hash += str.charCodeAt(i);
    }

    return hash;
}

function main() {

    WSH.echo('Type string, please')
    var str = WScript.StdIn.ReadLine();

    if (str === ''){
        WSH.echo('Input file is empty');
        return;
    }

    WSH.echo('Type substring')
    var subStr = WScript.StdIn.ReadLine();

    if (subStr === ''){
        WSH.echo('Wrong input substring');
        return;
    }
    var start;
    var end;
    var time;

    var collision = 0;
    var strHash = 0;
    var subStrHash = SimpleHash(subStr);
    var arr = new Array;
    var hoho = 0;

    for (var i = 0; i < str.length - subStr.length + 1; i++){
        if(i === 0){
            strHash = SimpleHash(str.substr(0, subStr.length));
        }
        else{
            strHash += str.charCodeAt(i + subStr.length - 1) - str.charCodeAt(i - 1);
        }

        if (strHash === subStrHash){
            var j = 0;

            while(str.charAt(i + j) === subStr.charAt(j)){
                j++;

                if (j === subStr.length){
                    arr[hoho] = i+1;
                    hoho++;
                    collision -= 1;
                    break;
                }
            }

            collision++;
        }
    }

    WSH.echo('Amount of collisions: ' + collision);
    for (i=0; i<arr.length; i++)
        WSH.echo(arr[i]);
}

main();