codejump
MediumPro challengePythonJavaScriptTypeScript

Pagination Range

AlgorithmsArrays

Implement solve(currentPage, totalPages, siblings) returning a pagination
range with ellipses, like [1, '...', 4, 5, 6, '...', 10].

Rules:

  • Always include first and last page.
  • Show siblings pages on either side of currentPage.
  • Use '...' between non-contiguous numbers.
  • Never repeat numbers.

Sample tests

Test #1At start
Input: [1,5,1]
Output: [1,2,"...",5]
Test #2Middle with siblings
Input: [5,10,1]
Output: [1,"...",4,5,6,"...",10]
Test #3At end
Input: [10,10,1]
Output: [1,"...",9,10]
Test #4No ellipses needed
Input: [3,5,1]
Output: [1,2,3,4,5]
Test #5Two siblings
Input: [50,100,2]
Output: [1,"...",48,49,50,51,52,"...",100]
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