我无法弄清楚如何让Java计算随机生成的数字列表中的零数量,直到达到“-10”或“+10”为止。
我很感激任何帮助,
谢谢。
我的代码:
import java.util.Random;
public class RandomWalk
{
public static void main(String[] args)
{
Random rand = new Random();
int position = 0;
int stepsTotal = 0;
int zeroesTotal = 0;
while (position !=10 && position != -10) {
if (rand.nextDouble() < 0.5) {
position--;
}
if (rand.nextDouble() < 0.5) {
position++;
}
else {
zeroesTotal++ ;
}
stepsTotal++;
System.out.print(" " + position);
}
System.out.println();
System.out.println("The final position is: " + position);
System.out.println("The number of steps taken is: " + stepsTotal);
System.out.println("There are " + zeroesTotal + " zeroes." );
}
}
示例输出:(我计算4个零,而不是21个。)(甚至计算什么?)
0 0 0 0 1 1 2 3 4 4 4 3 3 4 4 4 5 6 6 6 6 5 5 6 7 8 7 7 7 6 6 6 6 7 7 7 7 8 8 8 9 8 9 9 8 7 8 9 9 9 10
最终职位是:10
采取的步骤是:58
有21个零。 (错误的地方)
答案 0 :(得分:3)
如果位置实际位于zeroesTotal
,请确保您正在递增0
。此外,每次迭代都不需要生成两个随机数。
public static void main(String[] args)
{
Random rand = new Random();
int position = 0;
int stepsTotal = 0;
int zeroesTotal = 0;
while (position != -10 && position != 10) {
if (rand.nextDouble() < 0.5) {
position--;
}
else {
position++;
}
if (position == 0) {
zeroesTotal++;
}
stepsTotal++;
System.out.print(" " + position);
}
System.out.println();
System.out.println("The final position is: " + position);
System.out.println("The number of steps taken is: " + stepsTotal);
System.out.println("There are " + zeroesTotal + " zeroes." );
}