notes/Wiki/Notes for CS.md

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2022-06-14 23:33:35 +08:00
1. use ```int arr[][Columns]``` for 2-d function declaration
2. ```#pragma gcc optimize("Ofast, inline")``` to increase speed
3. use parens to close bitwise operations and %
4. remember the scope in loops (int i) (int j)
5. ```matrix[i][j]``` in scanning a 2d array.
6. figure out ```matrix[i][j]``` and ```matrix[i][n-1]```
More can be found in another file.