我是Java编程的新手,我想知道如何交换最高编号和最低编号的位置。
import java.util.*;
public class HighestandLowestNum
{
static Scanner data = new Scanner (System.in);
public static void main(String[]args)
{
int num [] = new int [10];
int i;
System.out.println("Enter 10 numbers: ");
for (i = 0; i < num.length; i++)
{
num [i] = data.nextInt();
Highest(num);
Lowest(num);
}
System.out.println("The highest number is: " + Highest(num));
System.out.println("The lowest number is: " + Lowest(num));
}
public static int Highest(int[] num)
{
int highest = num[0];
int i;
for (i = 1; i < num.length; i++)
{
if (num[i] > highest)
{
highest = num[i];
}
}
return highest;
}
public static int Lowest(int[] num)
{
int lowest = num[0];
int i;
for (i = 1; i < num.length; i++)
{
if (num[i] < lowest)
{
lowest = num[i];
}
}
return lowest;
}
}
这是我的计划。请帮我解决我的问题。
答案 0 :(得分:0)
最高和最低两个函数返回最高和最低数字的value
。为了交换它们,您需要知道数组中这些值的位置。
如果您更改这些功能或创建新功能以返回最高和最低值的索引,那么您可以将它们与您之前可能已经看过的内容交换:
伪代码:
temp = first
first = last
last = temp
答案 1 :(得分:0)
要交换数组中的两个数字,您需要知道数字及其位置,如前面的答案中所述。您可以修改这两个函数,使它们提供 Numbers 以及 Position 。一种方法是从函数返回一个数组而不是整数。在该阵列中,可以封装有关号及其位置的信息。我会在我提供的代码中向您展示我的意思:
static Scanner data = new Scanner (System.in);
public static void main(String[]args)
{
int num []= new int [10];
int i;
System.out.println("Enter 10 numbers: ");
for (i = 0; i <num.length; i++)
{
num [i] = data.nextInt();
Highest(num);
Lowest(num);
}
System.out.print("The original array is");
for (i = 0; i <num.length; i++)
{
System.out.print(" "+num[i]);
}
System.out.println("");
int highest = Highest(num)[0];
int lowest = Lowest(num)[0];
int highestPosition = Highest(num)[1];
int lowestPosition = Lowest(num)[1];
System.out.println("The highest number is: " +highest+" at position "+highestPosition);
System.out.println("The lowest number is: " +lowest+" at position "+lowestPosition);
//Swap//
num[highestPosition] = lowest;
num[lowestPosition] = highest;
System.out.print("The new array is");
for (i = 0; i <num.length; i++)
{
System.out.print(" "+num[i]);
}
}
public static int[] Highest(int[] num)
{
int highest = num[0];
int i;
int index = 0;
int[] result = {highest,index};
for (i = 1; i <num.length;i++)
{
if (num[i] > highest)
{
highest = num[i];
index = i;
result[0] = highest;
result[1] = index;
}
}
return result;
}
public static int[] Lowest(int[] num)
{
int lowest = num[0];
int i;
int index = 0;
int[] result = {lowest,index};
for (i = 1; i <num.length;i++)
{
if (num[i] < lowest)
{
lowest = num[i];
index = i;
result[0] = lowest;
result[1] = index;
}
}
return result;
}
尝试阅读最高和最低功能中的修改,然后阅读主要代码。希望这可以帮助。