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Keep unique values

Return the values that appear in the input, keeping only their first appearance. Preserve the original order.

Examples

keeps the first copy of repeated values
Input
[[4,2,4,1,2]]
Expected
[4,2,1]
leaves an already unique list alone
Input
[[3,1,8]]
Expected
[3,1,8]

Constraints

  • The input contains at most 10,000 finite numbers.
  • Do not sort the input.
  • Return a new array.
unique-values.tsSolution.uniqueValues() · browser sandbox
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