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45 changes: 45 additions & 0 deletions Algorithms/Palindrome Partitioning.cpp
Original file line number Diff line number Diff line change
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#include <bits/stdc++.h>
using namespace std;

bool isPalindrome(string &s, int i, int j) {
while (i < j) {
if (s[i] != s[j])
return false;
i++;
j--;
}
return true;
}

int minCuts(string &s, int i, int j, vector<vector<int>> &dp) {
if (i >= j || isPalindrome(s, i, j))
return 0;

if (dp[i][j] != -1)
return dp[i][j];

int ans = INT_MAX;

for (int k = i; k < j; k++) {
if (isPalindrome(s, i, k)) {
int right = minCuts(s, k + 1, j, dp);
ans = min(ans, 1 + right);
}
}

return dp[i][j] = ans;
}

int main() {
string s;
cout << "Enter a string: ";
cin >> s;

int n = s.size();
vector<vector<int>> dp(n, vector<int>(n, -1));

cout << "Minimum number of cuts needed for palindrome partitioning: "
<< minCuts(s, 0, n - 1, dp) << endl;

return 0;
}