JAVASCRIPT

Using the reverse method to Reverse an Array

var arr = [1,2,3,4];
arr.reverse();
console.log(arr);

reverse () method to reverse the array

var arrayReverse = ["s", "o", "f", "t", "h", "u", "n", "t"]. reverse ();
["t", "n", "u", "h", "t", "f", "o", "s"]

how to make a arr reverse function

let mainFunction=(arr)=>{

if(arr.length %2 != 0 ){
return false

}
else{
for (let i=0 ; i < arr.length /2 ; ++i ){
let temp=arr[i];
arr[i]=arr[i + arr.length /2]
arr[i+ arr.length /2]= temp


}

}
return arr
}


console.log(mainFunction([1,2,4,6]))


//output
// [4,6,1,2]