left shift array c++ code example

Example 1: c++ shift array to the right

// Shift array elements to right
	const int SIZE = 9;
	int arr[SIZE]={1,2,3,4,5,6,7,8,9};

	int last = arr[SIZE - 1];		
	for (int i = SIZE - 1; i > 0; i--)	
		arr[i] = arr[i - 1];		
	
	arr[0] = last;

Example 2: array rotation program in java

//Rotating array left 
//d = number of rotations
static void rotLeft(int[] a, int d)
{
    //using secondary array of  same size 
	int [] n = new int[a.length];
    //saving element into array n[] according to newlocation of rotations(d)
	for(int i = 0; i < a.length; i++)
	{
		int newlocation = (i+(a.length - d))% a.length;
		n[newlocation] = a[i];
	}
	//printing new rotated array
	for(int i = 0; i < a.length; i++)
	{
		System.out.print(n[i]+ " ");
	}
}

Example 3: shift array elements to left c++

int temp=arr[0];
	/********************************	Method 1
	for (int i = 0; i < SIZE - 1; i++)		
	{
		arr[i] = arr[i + 1];
	}
	arr[SIZE-1]=temp;
	*/
	//									Method 2
	for (int i = 1; i < SIZE - 1; i++)
	{
		arr[i - 1] = arr[i];
	}
	arr[SIZE - 1] = temp;
	for (int i = 0; i < SIZE; i++)
		cout << arr[i] << "\t";
	cout << endl;

Example 4: rorate array

function rotateArray(A, K) {
    if (!A.length) return A;
    let index = -1;
    while (++index < K) {
        A.unshift(A.pop());
    }
    return A;
}

[
    rotateArray([3, 8, 9, 7, 6], 3),
    rotateArray([0, 0, 0], 1),
    rotateArray([1, 2, 3, 4], 4),
    rotateArray([], 4),
].join(' | ');