2352. Equal Row and Column Pairs

Author: a-khakimov

leetcode-scala/src/main/scala/LeetCode75/HashMap_Set/2352. Equal Row and Column Pairs.sc

@@ -0,0 +1,13 @@
+object Solution {
+  def equalPairs(grid: Array[Array[Int]]): Int = {
+    val columns = grid.map(_.toList).toList
+    val rows = grid.transpose.toList.map(_.toList)
+    var answer: Int = 0
+    rows.foreach { row => answer += columns.count(_ == row) }
+    answer
+  }
+}
+
+Solution.equalPairs(Array(Array(3,2,1),Array(1,7,6),Array(2,7,7))) // 1
+Solution.equalPairs(Array(Array(3,1,2,2),Array(1,4,4,5),Array(2,4,2,2),Array(2,4,2,2))) // 3
+Solution.equalPairs(Array(Array(13, 13),Array(13, 13))) // 4