外大内小的循环
long startTime = System.nanoTime(); for (int i = 0; i < 100000; i++) { for (int j = 0; j < 100; j++) { } } long endTime = System.nanoTime(); long finalTime = endTime - startTime; System.out.println(finalTime);消耗时间
2747363 Process finished with exit code 0外小内大的循环
long startTime = System.nanoTime(); for (int i = 0; i < 100; i++) { for (int j = 0; j < 100000; j++) { } } long endTime = System.nanoTime(); long finalTime = endTime - startTime; System.out.println(finalTime);消耗时间
4083471 Process finished with exit code 0