Leetcode 718 Solution

This article provides solution to leetcode question 718 (maximum-length-of-repeated-subarray)
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https://leetcode.com/problems/maximum-length-of-repeated-subarray

Solution

class Solution {
public:
    int findLength(vector<int>& A, vector<int>& B) {
        int m = A.size();
        int n = B.size();

        vector<vector<int>> dp(m, vector<int>(n));
        int ans = 0;

        for (int i = 0; i < m; i++)
        {
            for (int j = 0; j < n; j++)
            {
                if (A[i] == B[j])
                    dp[i][j] = i > 0 && j > 0 ? dp[i - 1][j - 1] + 1 : 1;
                else
                    dp[i][j] = 0;
                ans = max(ans, dp[i][j]);
            }
        }
        return ans;
    }
};