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Question:
Ann x nmatrix isvalidif every row and every column containsallthe integers from1ton(inclusive).
Given ann x ninteger matrixmatrix, returntrueif the matrix isvalid.Otherwise, returnfalse.
Example 1:
Input: matrix = [[1,2,3],[3,1,2],[2,3,1]] Output: true Explanation: In this case, n = 3, and every row and column contains the numbers 1, 2, and 3. Hence, we return true.
Example 2:
