Simple little question ~!

xhbsea

The second is more efficient

diablo4456

Try it yourself first to see if it makes a difference

allan520

hannah2222


   
The difference is different, but the if() statement has little effect here, because if list1.size is used in this way, the list must be traversed every time to get its size. If the size attribute of the list is used repeatedly, it is best to First take it out and put it in the int variable. For example, there is such a statement for (;list.size;) {} It is better to use the latter method

  

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