Given two values m and n, fill a matrix of size ‘m*n’ in spiral (or circular) fashion (clockwise) with natural numbers from 1 to m*n.
Input : m = 4, n = 4 Output : 1 2 3 4 12 13 14 5 11 16 15 6 10 9 8 7 Input : m = 3, n = 4 Output : 1 2 3 4 10 11 12 5 9 8 7 6
The idea is based on Print a given matrix in spiral form. We create a matrix of size m * n and traverse it in spiral fashion. While traversing, we keep track of a variable “val” to fill next value, we increment “val” one by one and put its values in the matrix.
1 2 3 4 12 13 14 5 11 16 15 6 10 9 8 7
Time complexity: O(m * n)
Space complexity: O(m * n)
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