Create Searching in sorted matrix (TheAlgorithms#738)

* Create Searching in sorted matrix

* Rename Searching in sorted matrix to searching_in_sorted_matrix.py

matrix/searching_in_sorted_matrix.py

@@ -0,0 +1,27 @@
+def search_in_a_sorted_matrix(mat, m, n, key):
+    i, j = m - 1, 0
+    while i >= 0 and j < n:
+        if key == mat[i][j]:
+            print('Key %s found at row- %s column- %s' % (key, i + 1, j + 1))
+            return
+        if key < mat[i][j]:
+            i -= 1
+        else:
+            j += 1
+    print('Key %s not found' % (key))
+
+
+def main():
+    mat = [
+        [2, 5, 7],
+        [4, 8, 13],
+        [9, 11, 15],
+        [12, 17, 20]
+    ]
+    x = int(input("Enter the element to be searched:"))
+    print(mat)
+    search_in_a_sorted_matrix(mat, len(mat), len(mat[0]), x)
+
+
+if __name__ == '__main__':
+    main()