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Some help for Apex College. A logic implemented in Java to shuffle pupils on an assembly line by moving a number of pupils either to the front of the line or to the end of the line.
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| public class ShuffleClass { | |
| public static int[] shufflePupils(int[] pupils, int numberToMove) | |
| { | |
| if(pupils == null) { | |
| throw new IllegalArgumentException("List of pupils is null"); | |
| } | |
| if(Math.abs(numberToMove) > pupils.length) { | |
| numberToMove %= pupils.length; | |
| } | |
| if(pupils.length == 0 || numberToMove == 0) { | |
| return pupils; | |
| } | |
| if(Math.abs(numberToMove) == pupils.length) { | |
| return pupils; | |
| } | |
| int temp; | |
| int nextPupilToMove; | |
| int nextPupilToShift; | |
| int indexOfNextToMove; | |
| int indexOfLastPupil = pupils.length - 1; | |
| if(numberToMove > 0) | |
| { | |
| int indexOfFirstToMove = ( indexOfLastPupil ) - ( numberToMove - 1 ); | |
| for (int move = 0; move < numberToMove; move++) { | |
| indexOfNextToMove = indexOfFirstToMove + move; | |
| nextPupilToMove = pupils[indexOfNextToMove]; | |
| temp = pupils[move]; | |
| for (int index = move; index < indexOfNextToMove; index++) { | |
| nextPupilToShift = temp; | |
| temp = pupils[index + 1]; | |
| pupils[index + 1] = nextPupilToShift; | |
| } | |
| pupils[move] = nextPupilToMove; | |
| } | |
| } | |
| else | |
| { | |
| indexOfNextToMove = 0; | |
| numberToMove = Math.abs(numberToMove); | |
| for (int move = 0; move < numberToMove; move++) { | |
| nextPupilToMove = pupils[indexOfNextToMove]; | |
| for (int index = 1; index <= indexOfLastPupil; index++) { | |
| pupils[index - 1] = pupils[index]; | |
| } | |
| pupils[indexOfLastPupil] = nextPupilToMove; | |
| } | |
| } | |
| return pupils; | |
| } | |
| } |
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Hi @meekg33k, yes indeed it is. Thank you for the kind words. I have refactored as directed.
Thank you for the opportunity.