npm-array-rotation

Array rotation includes left rotation, right rotation, printing stages of rotation which receives array, position(optional/positive/negative) as an input and returns the output array.

Installation

npm i npm-array-rotation

Usage

var arrayRotation = require('npm-array-rotation');

rotateLeft(array, num)

Rotates the array towards the left (Shifts number(position) items of the array from starting and pushes them to the end of array. If position is given negative it will do the reverse left rotation (i.e right rotation)

 var inputArray = [1,2,3,4,5,6,7,8,9];
 var position = 2;
 arrayRotation.rotateLeft(inputArray, position)  
 // 2 rotations to left [ 3, 4, 5, 6, 7, 8, 9, 1, 2 ]

rotateRight(array, num)

Rotates the array towards the right (Shifts number(position) items of the array from starting and pushes them to the end of array. If position is given negative it will do the reverse right rotation (i.e right rotation)

  var inputArray = [1,2,3,4,5,6,7,8,9];
  var position = 2;
  arrayRotation.rotateRight(inputArray, position)  
  //  [ 8, 9, 1, 2, 3, 4, 5, 6, 7 ]

rotate(array, num)

Rotates the array according to the (position) towards the right/left. If position is positive it will do left rotation, If not it will do right rotation

 var inputArray = [1,2,3,4,5,6,7,8,9];
 var position = 2;
 arrayRotation.rotate(inputArray, -position)  
 //  [ 8, 9, 1, 2, 3, 4, 5, 6, 7 ]  Right
 
 arrayRotation.rotate(inputArray, position) 
 //   [ 3, 4, 5, 6, 7, 8, 9, 1, 2 ]  Left

rotateLeftPrint(array, num)

Rotates the array towards the left (Shifts number(position) items of the array from starting and pushes them to the end of array. If position is given negative it will do the reverse left rotation (i.e right rotation) and outputs every rotation.

  var inputArray = [1,2,3,4,5,6,7,8,9];
  var position = 3;
  arrayRotation.rotateLeftPrint(inputArray, position)  
  //  [ [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ],
  //	 [ 2, 3, 4, 5, 6, 7, 8, 9, 1 ],
  //	 [ 3, 4, 5, 6, 7, 8, 9, 1, 2 ] ]
 

rotateRightPrint(array, num)

Rotates the array towards the right (Shifts number(position) items of the array from starting and pushes them to the end of array. If position is given negative it will do the reverse right rotation (i.e right rotation) and outputs every rotation.

  var inputArray = [1,2,3,4,5,6,7,8,9];
  var position = 3;
  arrayRotation.rotateLeftPrint(inputArray, position)  
 // [ [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ],
 // 	 [ 9, 1, 2, 3, 4, 5, 6, 7, 8 ]
 //	  [ 8, 9, 1, 2, 3, 4, 5, 6, 7 ] ]