Merge pull request #708 from tanishagarg1803/master

added new recursion question

03. Recursion/FindTheStringInGrid.cpp

@@ -0,0 +1,81 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+// } Driver Code Ends
+class Solution
+{
+public:
+    vector<vector<int>> searchWord(vector<vector<char>> grid, string word)
+    {
+        vector<vector<int>> ans;
+        int n = grid.size();
+        int m = grid[0].size();
+        for (int i = 0; i < n; i++)
+        {
+            for (int j = 0; j < m; j++)
+            {
+                if (grid[i][j] == word[0] && isword(i, j, word, grid))
+                {
+                    ans.push_back({i, j});
+                }
+            }
+        }
+        return ans;
+        // Code here
+    }
+    bool isword(int i, int j, string word, vector<vector<char>> grid)
+    {
+        vector<vector<int>> dirs = {{0, 1}, {1, 0}, {-1, 0}, {0, -1}, {1, 1}, {-1, -1}, {1, -1}, {-1, 1}};
+        int n = grid.size();
+        int m = grid[0].size();
+        for (auto dir : dirs)
+        {
+            int mini = i, minj = j;
+            int c = 0;
+            while (mini >= 0 && minj >= 0 && mini < n && minj < m && c < word.length() && grid[mini][minj] == word[c])
+            {
+                mini = mini + dir[0];
+                minj = minj + dir[1];
+                c++;
+            }
+            if (c == word.length())
+            {
+                return true;
+            }
+        }
+        return false;
+    }
+};
+
+// { Driver Code Starts.
+int main()
+{
+    int tc;
+    cin >> tc;
+    while (tc--)
+    {
+        int n, m;
+        cin >> n >> m;
+        vector<vector<char>> grid(n, vector<char>(m, 'x'));
+        for (int i = 0; i < n; i++)
+        {
+            for (int j = 0; j < m; j++)
+                cin >> grid[i][j];
+        }
+        string word;
+        cin >> word;
+        Solution obj;
+        vector<vector<int>> ans = obj.searchWord(grid, word);
+        for (auto i : ans)
+        {
+            for (auto j : i)
+                cout << j << " ";
+            cout << "\n";
+        }
+        if (ans.size() == 0)
+        {
+            cout << "-1\n";
+        }
+    }
+    return 0;
+} // } Driver Code Ends