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All topics›JavaScript›DP: 2D

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advancedlayer I8 · DP: 2D5 tests

Given two strings word1 and word2, return the minimum number of operations needed to turn word1 into word2.

  • The allowed operations are insert a character, delete a character and replace a character, each costing 1
  • Turning 'horse' into 'ros' takes 3
  • If one string is empty the answer is the length of the other
  • Identical strings cost 0

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