longest_common_subsequence
longest_common_subsequence.py 源码
# 最长公共子序列
class Solution:
def longestCommonSubsequence(self, text1: str, text2: str) -> int:
dp = [[0] * (len(text2) + 1) for _ in range(len(text1) + 1)]
for i in range(1, len(text1) + 1):
for j in range(1, len(text2) + 1):
if text1[i - 1] == text2[j - 1]:
dp[i][j] = dp[i - 1][j - 1] + 1
else:
dp[i][j] = max(dp[i - 1][j], dp[i][j - 1])
return dp[-1][-1]
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