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Copy pathlcs.cpp
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51 lines (42 loc) · 1.17 KB
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#include <iostream>
#include <vector>
using namespace std;
void printLongestCommonSubsequence(const string& seq1, const string& seq2) {
int m = seq1.length();
int n = seq2.length();
// Create a 2D table to store the lengths of LCS
vector<vector<int>> dp(m + 1, vector<int>(n + 1, 0));
// Calculate the lengths of LCS
for (int i = 1; i <= m; ++i) {
for (int j = 1; j <= n; ++j) {
if (seq1[i - 1] == seq2[j - 1]) {
dp[i][j] = dp[i - 1][j - 1] + 1;
} else {
dp[i][j] = max(dp[i - 1][j], dp[i][j - 1]);
}
}
}
// Find the LCS
int lcsLength = dp[m][n];
string lcs;
int i = m, j = n;
while (i > 0 && j > 0) {
if (seq1[i - 1] == seq2[j - 1]) {
lcs = seq1[i - 1] + lcs;
--i;
--j;
} else if (dp[i - 1][j] > dp[i][j - 1]) {
--i;
} else {
--j;
}
}
// Print the LCS
cout << "Longest Common Subsequence: " << lcs << endl;
}
int main() {
string seq1 = "AGBGTABX";
string seq2 = "GBXTXAYBX";
printLongestCommonSubsequence(seq1, seq2);
return 0;
}