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Spiral matrix: Difference between revisions
→{{header|C sharp|C#}}
(→Functional Solutions: Added a pure functional variant (without generative mutation)) |
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Line 864:
}
}</lang>
Translated proper C++ solution:
<lang csharp>
//generate spiral matrix for given N
int[,] CreateMatrix(int n){
int[] dx = {0, 1, 0, -1}, dy = {1, 0, -1, 0};
int x = 0, y = -1, c = 0;
int[,] m = new int[n,n];
for (int i = 0, im = 0; i < n + n - 1; ++i, im = i % 4)
for (int j = 0, jlen = (n + n - i) / 2; j < jlen; ++j)
m[x += dx[im],y += dy[im]] = ++c;
return n;
}
//print aligned matrix
void Print(int[,] matrix) {
var len = (int)Math.Ceiling(Math.Log10(m.GetLength(0) * m.GetLength(1)))+1;
for(var y = 0; y<m.GetLength(1); y++){
for(var x = 0; x<m.GetLength(0); x++){
Console.Write(m[y, x].ToString().PadRight(len, ' '));
}
Console.WriteLine();
}
}
</lang>
====Spiral Matrix without using an Array====
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