Give 2 examples of a code optimization?

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Give 2 examples of a code optimization?..

Answer / mms zubeir

I would like to quote two things from the same area.

1. Read/Write chunks from/into a file instead of byte by
byte reading.

2. Aquire resources late and relieve it early. Example, if
you want to use a file, open the file as late as possible
and release it as early as possible after use.

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Give 2 examples of a code optimization?..

Answer / maria

http://en.wikipedia.org/wiki/Modulo_operation

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Give 2 examples of a code optimization?..

Answer / maria

1) For checking modulo use

num1&(num2-1)

instead:

num1%num2

2) For multiplying or dividing by 2 use left and right shift
accordingly.

3) In loop use, if code allows it, decrement,like this:
for(int i = MAX_VALUE ; i > 0 ; i--)
instead:
for(int i = 0 ; i < MAX_VALUE; i++)