> ## Documentation Index
> Fetch the complete documentation index at: https://blog.sumathi.dev/llms.txt
> Use this file to discover all available pages before exploring further.

#  Practice set 5

* Create an array of numbers and take input from user and add into array

* Keep adding numbers to array untill zero is added

* Filter for numbers divisible by 10

* Create an array of square of the numbers

* Use reduce to calculate factorial of a given number from an array of first n natural numbers (n being te number whose factorial needs to be calculated)

* ```js theme={null}

    // Problemm No 1
    let arr = [1,2,3,4]
    let a = prompt("Enter a number")
    a = Number.parseInt(a)
    arr.push(a)
    console.log(a)

    // Problem No 2
    let arr2 = [  3, 4]
    let b = prompt("Enter a number");
    b = Number.parseInt(b)
    while (b!= 0) {
        if (!isNaN(b)) {arr2.push(b)}
        b = prompt("Enter a number")
        b = Number.parseInt(b)
    }
    console.log(arr2)
    // If 0 also should be added
    let c;
    let arr3 = [4,5]
    do {
        c = prompt("Enter a number");
        c = Number.parseInt(c)
        arr3.push(c)
    } while (c!=0)
    console.log(arr3)

    // Problem No 3

    let d = [10,9,8,90,80,5,50]
    let d_new = d.filter((value)=>{
        return value%10 == 0
    })
    console.log(d_new)

    // Problem No 4
    let e  =[ 1,2,3,4]
    let e_new = e.map((value)=> {
        return value*value
    })
    console.log(e_new)

    // Problem No 5
    let f = [1,2,3,4]
    let f_new = f.reduce((value1,value2)=>{
        return value1*value2
    })
    console.log(f_new)
  ```