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Queue implementation #83

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Queue implementation #83

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@ksetoue ksetoue commented Nov 30, 2021

Hello!

This PR adds an implementation of queue using a IntArray.

It includes:

  • enqueue method
  • dequeue method
  • peek first and last items
  • unit tests for enqueue and dequeue methods

@ksetoue ksetoue changed the title ✨ Add queue implementation using IntArray Queue implementation Nov 30, 2021
Comment on lines +57 to +64
* @returns the first item inserted into the queue as string
*/
fun peekFirst(): String = queue[first].toString()

/**
* @returns the last item inserted into the queue as string
*/
fun peekLast(): String = queue[last].toString()

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Return the int directly should be better, also care about empty list case

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