如何使Java中的循环增加1以外的增量 [英] How to make for loops in Java increase by increments other than 1

问题描述

  for（j = 0; j <= 90; j ++）{ } 
  

工作正常。但是当你有这样一个for循环：

$ p $ for（j = 0; j <= 90; j + 3）{ }


不起作用。有人可以向我解释这个吗？

解决方案

这是因为 j + 3 不会改变 j 的值。你需要用 j = j + 3 或 j + = 3 替换它，这样<$ c对于（j = 0; j <= c c）而言，$ c> j 增加了3：

$ p $ 90; j + = 3）{}

If you have a for loop like this:

for(j = 0; j<=90; j++){}

It works fine. But when you have a for loop like this:

for(j = 0; j<=90; j+3){}

it doesn't work. Could someone please explain this to me?

解决方案

That’s because j+3 doesn’t change the value of j. You need to replace that with j = j + 3 or j += 3 so that the value of j is increased by 3:

for (j = 0; j <= 90; j += 3) { }

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