tasks

// Fibonacci numbers

const fib = function (n) {
    if (n === 0 || n === 1) {
        return [0, 1];
    }
    const fibArr = fib(n-1)
    fibArr.push(fibArr[fibArr.length - 1] + fibArr[fibArr.length - 2]);
    return fibArr;

}

console.log(fib(8));


// duplicate Array

const duplicate = function(arr) {
    return arr.concat(arr);
}

console.log(duplicate([1,2,3]))

// Deep copy an object

const deepCopy = function (obj) {
    const copyObj = {};
    const keys = Object.keys(obj)
    keys.forEach(key => {
        if (obj[key] instanceof Object) {
            if (obj[key] instanceof Function) {
                copyObj[key] = obj[key]
            } else if(obj[key] instanceof Array) {
                copyObj[key] = obj[key].map(el => {
                    if (el instanceof Object) {
                        el = deepCopy(el)
                    }
                    return el;
                });
            }
            else {
                copyObj[key] = deepCopy(obj[key])
            }
        } else {
            copyObj[key] = obj[key]
        }
    });
    return copyObj;
}

const human = {
    name: "Georgi",
    address: {
        street: "ulica"
    },
    func: function() {
        return 1;
    },
    arr: [1,2,3]
};
const human2 = deepCopy(human);
console.log(human === human2)
human2.arr.push(4);
human2.address.street = ""

console.log(human)

console.log(human2)


// Total Time

const arr = ["1:23:45"];

const totalTime = function (arr) {
    const totalSeconds = arr.reduce((sec, el) => {
        const timeArr = el.split(':').map(Number);
        sec += timeArr[0] * 3600 + timeArr[1] * 60 + timeArr[2];
        return sec;
    }, 0);
    const hours = Math.floor(totalSeconds / 3600);
    const mins = Math.floor((totalSeconds - hours * 3600) / 60);
    const seconds = totalSeconds - hours * 3600 - mins * 60;
    return [hours, mins, seconds];
}

console.log(totalTime(arr));