Problem1-UncleScroogesBag

function solve(input) {
    var index,
        elements = [],
        type,
        value,
        totalCoins = 0,
        validNum,
        goldCoins,
        silverCoins,
        bronzeCoins;

    for (var index in input) {
        elements = input[index].split(' ');
        type = elements[0].toLowerCase();
        value = Number(elements[1]);

        //check if the value is a valid positive integer number
        validNum = false;
        if (value % 1 === 0 && value > 0) {
            validNum = true;
        }

        //check if the type of the element is a coin
        //and if its value is a valid number
        if ((type === 'coin' || type === 'coins') && validNum === true) {
            totalCoins += value;
        }
    }

    //calculate the number of gold, silver and bronze coins
    goldCoins = Math.floor(totalCoins / 100);
    silverCoins = Math.floor((totalCoins % 100) / 10);
    bronzeCoins = totalCoins % 10;

    //print the result
    console.log('gold : ' + goldCoins);
    console.log('silver : ' + silverCoins);
    console.log('bronze : ' + bronzeCoins);
}