我用for循环填充一个双数组,循环运行用户在第4行输入的圈数。然而,正如我在图片中展示的:
我输入3圈,问题提示3次,但是我的数据验证会吃掉我正在寻找的输入之一。
我该怎么解决这个问题?我觉得这很简单。
import java.util.Scanner;
public class JK_FINALPRAC1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Time-Trial Statistics Program\n");
System.out.println("This program will ask you to input split-times for each lap or length of a race. The ");
System.out.println("program will then calculate some basic statistics from the split-times.\n");
System.out.print("Enter the number of laps or lengths in the race: ");
int arraySize = sc.nextInt();
Double[] lapArray = new Double[arraySize];
System.out.println("Now input the elapsed time (split time) in seconds for each lap/length of the race.");
int index = 1;
double currentNum = 0.0;
for(int i=0;i<arraySize;i++){
System.out.print("Time for lap or length #" + index + ": ");
currentNum = sc.nextDouble();
if(currentNum > 0 && currentNum < 61){
lapArray[i] = currentNum;
index++;
}else if(currentNum<0 || currentNum >60){
System.out.println("Invalid input! Time must be between 0 and 60.");
}
}
}
2条答案
按热度按时间5kgi1eie1#
因为您正在运行for循环,所以每次i都会递增(即使验证失败)。
uelo1irk2#
它非常简单:为了确保你插入了一个双人而不吃一圈,把你的扫描仪输入线放在一个while循环中
除非do while的条件为false,否则这将无法承受循环递增计数器。
为了打印验证: