Day 3/100 - Solution

1a,Sort an array with Inbuild function

sort012(arr) {
        return arr.sort()
    }

1b, Sort an array without Inbuild function

let array = [-2,2,4,5,0,2,-1]
function sortArray(array){

    for(let i=0;i<array.length;i++){
        for(let j=i+1;j<array.length;j++){
            if(array[j]< array[i]){
                let temp = array[i]
                array[i] = array[j]
                array[j] = temp
            }
        }
    }

    return array
}

console.log("+++++++++++sorted array",sortArray(array))

2a, Check if two arrays are equal or not - using Inbuilt function

let array1 = [1,2,3,4,5]
let array2 = [5,2,3,4,5]
function checkEqual(array1,array2){
    if (array1.length !== array2.length) { return false };

    let result = true
        for(let i=0;i<array1.length;i++){
                if(array2.indexOf(array1[i]) == -1){
                    result = false
                    break
                }else {
                    let findIndex = array2.indexOf(array1[i])
                    array2.splice(findIndex,1)
                }
        }
        if(array2.length!=0){
            result = false
        }
        return result
}

2b, Check if two arrays are equal or not - Second way

checkEqual(array1,array2 ) {
        // code here
        let map = {}

    for(let num of array1){
        map[num] = (map[num] || 0) + 1
    }

    for(let num of array2){
        if(!map[num]){
            return false
        }
        map[num]--
    }
    return true
    }

3a,Rotate array by 1 - First way

function rotateByOne(array){

    let getLastElement = array[array.length-1]
    array.splice(array.length-1,1)
    array.unshift(getLastElement)

    return array
}

console.log("++++rotate array",rotateByOne([1,2,3,4,5,45]))

3b, Rotate array by 1 - second way

function rotateByOne(array){

    let getLastElement = array[array.length-1]
    for(let i=array.length-1;i>0;i--){
        array[i] = array[i-1]
    }
    array[0] = getLastElement
    return array
}

console.log("++++rotate array",rotateByOne([1,2,3,4,5,45]))