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2 parents 328ffcc + 5e68f30 commit 56045e0Copy full SHA for 56045e0
problems/0279.完全平方数.md
@@ -214,8 +214,26 @@ class Solution:
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return dp[n]
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```
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+Python3:
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+```python
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+class Solution:
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+ def numSquares(self, n: int) -> int:
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+ # 初始化
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+ # 组成和的完全平方数的最多个数,就是只用1构成
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+ # 因此,dp[i] = i
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+ dp = [i for i in range(n + 1)]
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+ # dp[0] = 0 无意义,只是为了方便记录特殊情况:
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+ # n本身就是完全平方数,dp[n] = min(dp[n], dp[n - n] + 1) = 1
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+
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+ for i in range(1, n): # 遍历物品
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+ if i * i > n:
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+ break
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+ num = i * i
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+ for j in range(num, n + 1): # 遍历背包
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+ dp[j] = min(dp[j], dp[j - num] + 1)
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-
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+ return dp[n]
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+```
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Go:
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```go
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