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  1. #include <iostream>
  2. #include <cstdio>
  3. using namespace std;
  4.  
  5. int lowbit(int i) { return i & (-i); }
  6.  
  7. void build(int MAX_N)
  8. { 
  9.     for (int i = 1; i <= MAX_N; i++)
  10.     {
  11.         for (int j = i - 2; j >= i - lowbit(i); j--)
  12.             printf("i: %2d, j: %4d\n", i, j);
  13.         printf("\n");
  14.     }
  15. }
  16.  
  17. int main() {
  18. 	build(11);
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 4984KB
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stdin
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Standard input is empty
stdout
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i:  2, j:    0


i:  4, j:    2
i:  4, j:    1
i:  4, j:    0


i:  6, j:    4


i:  8, j:    6
i:  8, j:    5
i:  8, j:    4
i:  8, j:    3
i:  8, j:    2
i:  8, j:    1
i:  8, j:    0


i: 10, j:    8
https://ideone.com/A7LMg5
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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