Problem 1167. matrix zigzag

Unfold a 2-D matrix to a 1-D array in zig-zag order, e.g., for matrix

 [ 1 2 3 ;
   4 5 6 ;
   7 8 9 ]

the resulting 1-D array should be

 [ 1 2 4 7 5 3 6 8 9 ]
Solve

Solution Stats

31.21% Correct | 68.79% Incorrect
Last Solution submitted on Dec 15, 2025

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