Change Coin 2 & Paint House #1746
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The student has done an excellent job in providing multiple solutions with clear explanations and optimizations. The only minor improvement could be to ensure that the memoization array initialization is consistent (currently, it initializes to -1 for Coin Change II but uses 0 for Paint House). Additionally, the tabulation solution for Coin Change II could be reviewed for correctness, as it seems to have an off-by-one error in the loop bounds (j should start from coins[i-1] to avoid negative indices). Overall, the student's work is thorough and demonstrates a strong understanding of dynamic programming concepts. |
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