Get the rank of an array of numbers

Rank each number by how many values are larger, starting at 1.

JavaScript Version 1.0.0 · MIT · .md

function ranking(values) { return values.map(value => values.filter(other => other > value).length + 1); }

Input & expected output

[
  80,
  65,
  90,
  65
]

[
  2,
  3,
  1,
  3
]

The edge case

[]

[]

Know the limits

• Ties share a rank and the next rank is skipped (competition ranking).
• Quadratic: fine for the lab’s 1,000 items.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Keep exploring

• Clone an array — Create a new array without copying the objects inside it.
• Remove duplicate values — Keep the first occurrence of each value, in its original order.
• Flatten a nested array — Turn a nested array into one sequence of values.