day 04

passwordCriteria.js

function passwordCriteria(password) {
    
    isValidPassword = true;
    // if (Math.ceil(Math.log(password + 1) / Math.LN10) != 6){
    //     console.log("password is not 6 digits - "+password.length)
    //     isValidPassword = false;
    // }
    
    if (isValidPassword && !isAdjacentPairNew(password)){
        isValidPassword = false;
    }

    if (isValidPassword && !isAscending(Math.floor(password/10), password % 10)){
        isValidPassword = false;
    }
    return isValidPassword;
}

function isAdjacentPairNew(password){
    isAdjacent = false;
    isIdentical = false;
    for (j = 0; j < 6; j++){
        currDigit = password % 10;
        password = Math.floor(password/10);
        if (currDigit == password % 10){
            if (isAdjacent || isIdentical){
                isAdjacent = false
                isIdentical = true;
            }
            else {
                isAdjacent = true;
            }
        }
        else if (isAdjacent){
            return true;
        }
        else {
            isIdentical = false;
        }
    }
    return isAdjacent;
}

function isAdjacentPair(password, previousDigit){
    currentDigit = password % 10;
    if (currentDigit == previousDigit){
        //console.log("found a match between - "+currentDigit+" and "+previousDigit);
        return true;
    }
    else if (password == 0){
        //console.log("digits depleted");
        return false;
    }
    else{
        //console.log("going deeper with - "+password);
        return isAdjacentPair(Math.floor(password/10), currentDigit);
    }
}

function isAscending(password, previousDigit){
    currentDigit = password % 10;
    if (currentDigit > previousDigit){
        //console.log("found a match between - "+currentDigit+" and "+previousDigit);
        return false;
    }
    else if (password == 0){
        //console.log("digits depleted");
        return true;
    }
    else{
        return isAscending(Math.floor(password/10), password % 10);
    }
}

let counter = 0;
for (i = 347312; i < 805915; i++) {
    console.log("testing i - "+i);
    if (passwordCriteria(i)){
        counter += 1;
        console.log(counter+" counter bump");        
    }
    else {
        console.log(counter+" counter stays the same");        
    }
}
console.log(counter);
module.exports = {
    passwordCriteria
}