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All topics›JavaScript›DP: 1D

Coin Change

intermediatelayer I7 · DP: 1D5 tests

Given an array of distinct coins and a target amount, return the fewest coins needed to make exactly that amount.

  • You have an unlimited supply of every coin
  • If the amount cannot be made, return -1
  • amount = 0 needs 0 coins
  • Taking the biggest coin first is not correct in general

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