<script>
// 1. Write a function which will return these outputs.

// f(1)(2)(3); // 9
// f(2)(2)(1); // 4
// f(2, 2, 1); // 4
// f(); // 0

function result(a, b, c) {
  if (a && b && c) {
    return (a + b) * c;
  } else if (a && b) {
    return function(val) {
      return (a + b) * val;
    }
  } else if (a) {
    return function(val1) {
      return function(val2) {
        return (a + val1) * val2;
      }
    }
  } else {
    return 0;
  }
}

console.log(result(1)(2)(3)); // 9
console.log(result(2)(2)(1)); // 4
console.log(result(2, 2, 1)); // 4
console.log(result(2, 2)(2)); // 8
console.log(result()); // 0

// 2. let say an object is there. Convert into array which stores only the values of the object.
// x = {
//    a: 1, // name: value pairs
//    b: 2
//};

const nameArr = [];
const valArr = [];

for(let i in x) {
  nameArr.push(i); // prints name
  valArr.push(x[i]); // prints value
}

console.log(nameArr); // ["a", "b"]
console.log(valArr); // [1, 2]

// 3 . Reverse a string.

const reverseString = (str) => str.split('').reverse().join('');
console.log(`Reverse of the string: ${reverseString('amrit')}`); // Reverse string: tirma

// 4. Modify the code so that newObj.getA().getB(); should not return undefined

const newObj = {
  a: 1,
  b: 2,
  getA() {
    console.log(this.a);
    return this;  // add this line
  },
  getB() {
    console.log(this.b);
  }
}

newObj.getA().getB();

// 5. Add all the elements of an array.
let addArr = [1, 2, 5, 6, 8];

let resultArr = addArr.reduce((acc, item) => acc + item, 0);

console.log('Result array after reduce: ' + resultArr); // Result array after reduce: 22

// 6. Show the output of the following.
console.log([] + []); // empty string
console.log([] + {}); // [object Object]
console.log({} + {}); // [object Object][object Object]

// 7. Write a program to find factorial.

function factorial(number) {
    if (number <= 1) {
        return 1;
    }
    return number * factorial(number - 1);
}

document.write(factorial(6))

</script>