Leetocde516. 最长回文子序列 动态规划
原题链接:Leetocde516. 最长回文子序列
class Solution {
public:
int longestPalindromeSubseq(string s) {
int n = s.size();
vector<vector<int>> dp(n, vector<int>(n, 1));
for (int i = 0; i < n; i++) {
dp[i][i] = 1;
if (i + 1 < n && s[i] == s[i + 1]) {
dp[i][i + 1] = 2;
}
}
for (int l = 3; l <= n; l++) {
for (int i = 0; i < n - l + 1; i++) {
int j = i + l - 1;
if (s[i] == s[j]) {
dp[i][j] = dp[i + 1][j - 1] + 2;
} else {
dp[i][j] = max(dp[i + 1][j], dp[i][j - 1]);
}
}
}
return dp[0][n - 1];
}
};
原文地址:https://blog.csdn.net/qq_45791939/article/details/145095000
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