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All topics›JavaScript›Arrays & strings

Reverse Words in a String

intermediatelayer B2 · Arrays & strings5 tests

Write reverseWords(s). A word is any run of non-space characters. Return the words in the opposite order, joined by a single space.

  • Leading and trailing spaces must not appear in the result
  • Runs of several spaces between words collapse to one
  • The letters inside each word keep their order — only the words move
  • A string of nothing but spaces returns the empty string

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