Mosaic matrix: Difference between revisions
→{{header|Python}}: Added a functionally composed version.
(→{{header|Python}}: Normalized whitespace from tabs to space * 4 in Calmosoft's draft. Corrected lang tag.) |
(→{{header|Python}}: Added a functionally composed version.) |
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=={{header|Python}}==
===Procedural===
<lang python>size = 9
for Row in range(size):
Line 492 ⟶ 493:
<br>
1 0 1 0 1 0 1 0 1
===Functional===
No need for nested conditionals here.
<lang python>'''Mosaic grid'''
# mosaic :: Int
def mosaic(n):
'''Grid of alternating ones and zeroes,
starting with one at top left.
'''
return matrix(
n, n,
lambda y, x: (1 + y + x) % 2
)
# ------------------------- TEST -------------------------
# main :: IO ()
def main():
'''Test'''
for n in [7, 8]:
print(
showMatrix(
mosaic(n)
) + '\n'
)
# ----------------------- GENERIC ------------------------
# matrix :: Int -> Int -> ((Int, Int) -> a) -> [[a]]
def matrix(nRows, nCols, f):
'''A matrix of a given number of columns and rows,
in which each value is a given function over the
tuple of its (one-based) row and column indices.
'''
return [
[f(y, x) for x in range(1, 1 + nCols)]
for y in range(1, 1 + nRows)
]
# showMatrix :: [[a]] -> String
def showMatrix(rows):
'''String representation of a matrix'''
return '\n'.join([
' '.join([str(x) for x in y]) for y in rows
])
# MAIN ---
if __name__ == '__main__':
main()</lang>
{{Out}}
<pre>1 0 1 0 1 0 1
0 1 0 1 0 1 0
1 0 1 0 1 0 1
0 1 0 1 0 1 0
1 0 1 0 1 0 1
0 1 0 1 0 1 0
1 0 1 0 1 0 1
1 0 1 0 1 0 1 0
0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0
0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0
0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0
0 1 0 1 0 1 0 1</pre>
=={{header|Raku}}==
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