Try it on MATL OnlineTry it on MATL Online
Try it on MATL OnlineTry it on MATL Online
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:t!>tPY|!"@X@oQ&P! Uses 0 for * and 1 for #. Based on Lynn's Jelly answer.
Older answer, 31 bytes:
:t!>tPY|!"@X@oQ&P! Uses 0 for * and 1 for #. Based on Lynn's Jelly answer.
Older answer, 31 bytes:
2/tk:wXk:Ph"X@ot~XHh@Gy-hHQ&PY" Uses 1 for * and 0 for #.
% implicit input, say 5 2/ % divide input number by 2 [2.5] tk % make a copy and floor that [2.5, 2] : % create range 1 to the floored value [2.5, [1, 2]] wXk % bring out the division result and this time ceil it % [[1, 2], 3] : % create range 1 to that [[1, 2], [1, 2, 3]] Ph % flip the last array and concatenate horizontally % [[1, 2, 3, 2, 1]] " % loop through the array X@o % Is the current loop index odd? 1 for odd, 0 for even t~ % duplicate and logical negate that XH % copy that value to clipboard H h % and concatenate the values ([1 0] on odd iterations, [0 1] on even) @ % push current value from array (say 2, then stack is [[0 1], 2) G % push input again y- % subtract current array value from input [[0 1], 2, 3] h % concatenate those two [[0 1], [2, 3]] H % get the stored value from clipboard H (1 for even iterations, 0 for odd) Q % increment that &P % flip the array in that dimension: in even iterations, this flips % across columns and hence inverts the two values. [[0 1], [3, 2]] % in odd iterations, it's a no-op Y" % run-length decoding - repeat the element from first array the number of times % specified in the second array % implicit loop end, implicit output 2/tk:wXk:Ph"X@ot~XHh@Gy-hHQ&PY" Uses 1 for * and 0 for #.
% implicit input, say 5 2/ % divide input number by 2 [2.5] tk % make a copy and floor that [2.5, 2] : % create range 1 to the floored value [2.5, [1, 2]] wXk % bring out the division result and this time ceil it % [[1, 2], 3] : % create range 1 to that [[1, 2], [1, 2, 3]] Ph % flip the last array and concatenate horizontally % [[1, 2, 3, 2, 1]] " % loop through the array X@o % Is the current loop index odd? 1 for odd, 0 for even t~ % duplicate and logical negate that XH % copy that value to clipboard H h % and concatenate the values ([1 0] on odd iterations, [0 1] on even) @ % push current value from array (say 2, then stack is [[0 1], 2) G % push input again y- % subtract current array value from input [[0 1], 2, 3] h % concatenate those two [[0 1], [2, 3]] H % get the stored value from clipboard H (1 for even iterations, 0 for odd) Q % increment that &P % flip the array in that dimension: in even iterations, this flips % across columns and hence inverts the two values. [[0 1], [3, 2]] % in odd iterations, it's a no-op Y" % run-length decoding - repeat the element from first array the number of times % specified in the second array % implicit loop end, implicit output