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+### https://theweeklychallenge.org/blog/perl-weekly-challenge-242/
+"""
+
+Task 2: Flip Matrix
+
+Submitted by: [43]Mohammad S Anwar
+     __________________________________________________________________
+
+   You are given n x n binary matrix.
+
+   Write a script to flip the given matrix as below.
+1 1 0
+0 1 1
+0 0 1
+
+a) Reverse each row
+
+0 1 1
+1 1 0
+1 0 0
+
+b) Invert each member
+
+1 0 0
+0 0 1
+0 1 1
+
+Example 1
+
+Input: @matrix = ([1, 1, 0], [1, 0, 1], [0, 0, 0])
+Output: ([1, 0, 0], [0, 1, 0], [1, 1, 1])
+
+Example 2
+
+Input: @matrix = ([1, 1, 0, 0], [1, 0, 0, 1], [0, 1, 1, 1], [1, 0, 1, 0])
+Output: ([1, 1, 0, 0], [0, 1, 1, 0], [0, 0, 0, 1], [1, 0, 1, 0])
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 12th November
+   2023.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+"""
+### solution by pokgopun@gmail.com
+
+def flipMatrix(tup):
+    return tuple(
+            map(lambda x: tuple( i ^ 1 for i in reversed(x)) , tup)
+            )
+
+
+for inpt,otpt in {
+        ((1, 1, 0), (1, 0, 1), (0, 0, 0)): ((1, 0, 0), (0, 1, 0), (1, 1, 1)),
+        ((1, 1, 0, 0), (1, 0, 0, 1), (0, 1, 1, 1), (1, 0, 1, 0)): ((1, 1, 0, 0), (0, 1, 1, 0), (0, 0, 0, 1), (1, 0, 1, 0)),
+        }.items():
+    print(flipMatrix(inpt)==otpt)