摘要：int a=4,b=9; int[] tempArray={a,b}; int temp=a-b; System.out.println(tempArray[temp>>>31]); 引申：以可读性和时间换取空间array[j] = array[i] + array[j];array[i] = array[j] - array[i];array[j] = array[j] - array[i]; 阅读全文