# Krug.ArrayUtil (Krug v1.1.40) View Source

Utilitary module to handle array transformations.

# Link to this section Summary

## Functions

Rotates an `array` X `positions` in direction from right to left. A initial array [1,2,3,4] turn in [4,1,2,3] if rotate `positions` equal to 1.

Rotates an `array` X `positions` in direction from left to right. A initial array [1,2,3,4] turn in [2,3,4,1] if rotate `positions` equal to 1.

# Link to this section Functions

Link to this function

# rotate_left(array, positions)

View Source (since 0.4.3)

Rotates an `array` X `positions` in direction from right to left. A initial array [1,2,3,4] turn in [4,1,2,3] if rotate `positions` equal to 1.

## Examples

``````iex > Krug.ArrayUtil.rotate_left(nil,1)
nil``````
``````iex > Krug.ArrayUtil.rotate_left([],1)
[]``````
``````iex > Krug.ArrayUtil.rotate_left([1],2)
[1]``````
``````iex > Krug.ArrayUtil.rotate_left([1,2,3,4],1)
[4,1,2,3]``````
``````iex > Krug.ArrayUtil.rotate_left([1,2,3,4],3)
[2,3,4,1]``````
Link to this function

# rotate_right(array, positions)

View Source (since 0.4.3)

Rotates an `array` X `positions` in direction from left to right. A initial array [1,2,3,4] turn in [2,3,4,1] if rotate `positions` equal to 1.

## Examples

``````iex > Krug.ArrayUtil.rotate_right(nil,1)
nil``````
``````iex > Krug.ArrayUtil.rotate_right([],1)
[]``````
``````iex > Krug.ArrayUtil.rotate_right([1],2)
[1]``````
``````iex > Krug.ArrayUtil.rotate_right([1,2,3,4],nil)
[1,2,3,4]``````
``````iex > Krug.ArrayUtil.rotate_right([1,2,3,4],1)
[2,3,4,1]``````
``````iex > Krug.ArrayUtil.rotate_right([1,2,3,4],3)
[4,1,2,3]``````