Homework3

gistfile1.txt

//  1)
function squareNum(n) {
   return Math.pow(2, n)
}
console.log('square number is ' + squareNum(5)); //32

//  2)
function getFactorial(n) {
   let x = 1;
   for(let i = 1; i <= n; i++) {
      x = x * i
   }
   return x;
}
console.log('factorial is ' + getFactorial(10))

//  3)
function calc(n) {
   for(let i = 1; i <= n; i++) {
      let res = (1 + 1 / Math.pow(i, 2));
      return res*=res
   }
}
console.log('task 3 answer is ' + calc(2));

//  4)
function calc2(n) {
   for(let i = 1; i <= n; i++) {
      let res;
      res = 1 / Math.sin(i);
      return res += res;
   }
}
console.log('task 4 answer is ' + calc2(2));

//  5)
function calc3(n) {
   let res = Math.sqrt(2);
   for(let i = 1; i <= n; i++) {
      for(let j = 0; j < i; j++) {
         res += res;
      }
   }
   return res
}

console.log('task 5 answer is ' + calc3(2));

//  6)
function getMaxNum(x, y) {
   return x < y ? y : x;
}
console.log(getMaxNum(100, 201));

function getMinNum(x, y) {
   return x < y ? x : y;
}

console.log(getMinNum(1, 0))
function getMinMax(x, y) {
   switch (true) {
      case (x < y):
         return `${x} is a less number and ${y} is a bigger one`;
         break;
      case (x > y):
         return `${y} is a less number and ${x} is a bigger one`;
         break;
      case (x == y):
         return `${y} and ${x} are equal`;
         break;
      default:
         return 'enter a correct value'
   }
}
console.log(getMinMax(1, 10));
//  7)
function getTheBiggestNum(x, y, z) {
   if(x > y && x > z) {
      return x;
   } else if(y > x && y > z) {
      return y;
   } else {
      return z;
   }
}

console.log(getTheBiggestNum(5, 20, 8));

function getMinMaxOutOfThreeNums(x, y, z) {
let theBiggest = x > y ? x : y && y > z ? y : z;
let theLeast = x < y ? x : y && y < z ? y : z;
   return `the biggest number is ${theBiggest} and the least is ${theLeast}`
}
console.log(getMinMaxOutOfThreeNums(100, 105, 200));

//  8)
function getBiggerSumOrProd(x, y, z) {
   let sum = x + y + z;
   let prod = x * y * z;
   return prod > sum ? prod : sum
}
console.log(getBiggerSumOrProd(2, 2, 3));

function getSquaredMin(x, y, z) {
   let sum = x + y + (z/2);
   let prod = x * y * z;
   let res = sum < prod ? sum +=1  : prod += 1;
   console.log(res + 'res')
   return Math.pow(res, 2);
}

console.log(getSquaredMin(2, 2, 2))

function calc2(n) {
for(let i = 1; i <= n; i++) {
let res;
res = 1 / Math.sin(i);
return res += res; ---------------------------- оно выйдет на первой итерации, это ошибка
}
}

function calc(n) {
let res;
for(let i = 1; i <= n; i++) {
res = 1 / Math.sin(i);
}
return res += res;
}

Вынесла объявление переменной за пределы цикла, return - тоже. Теперь правильно?