left rotate the elements of an array
previous NextExample 2
class RotateLeft {
public static void main(String[] args) {
//Initialize array
int [] arr = new int [] {1, 2, 3, 4, 5};
//n determine the number of times an array should be rotated
int n = 3;
//Displays original array
System.out.println("Original array: ");
for (int i = 0; i < arr.length; i++) {
System.out.print(arr[i] + " ");
}
//Rotate the given array by n times toward left
for(int i = 0; i < n; i++){
int j, first;
//Stores the first element of the array
first = arr[0];
for(j = 0; j < arr.length-1; j++){
//Shift element of array by one
arr[j] = arr[j+1];
}
//First element of array will be added to the end
arr[j] = first;
}
System.out.println();
//Displays resulting array after rotation
System.out.println("Array after left rotation: ");
for(int i = 0; i< arr.length; i++){
System.out.print(arr[i] + " ");
}
}
}
Output :
Original Array: 1 2 3 4 5 Array after left rotation: 4 5 1 2 3