Question

好的，这是一项由于输出向后显示而被扣除的分配。我应该提示用户输入然后按降序显示输入，但我的显示有问题。我有两个数组，一年[]用于保存月份，一个month[totalMonths]用于保存用户输入。当我排序并显示输入year[]与月份不对应时，它是固定的。因此，例如，如果用户为Jan输入1，为2月输入2，为Mar输入3，则显示为; Jan：3 2月：2 Mar：1

关于我如何能够将月份与显示器的正确输入相对应的任何想法？这是排序和显示功能：

void sortArray(double month[], string year[], int totalMonths)
{
    int temp;
    bool swap;
    do
    {
        swap = false;
        for(int count = 0; count < totalMonths - 1; count++)
        {
            if(month[count] < month[count + 1])
            {
                temp = month[count];
                month[count] = month[count + 1];
                month[count + 1] = temp;
                swap = true;
            }
        }
    } while(swap);
    cout << "------------------------------------------------------------" << endl;
    cout << "Here are the months rainfall statistics sorted from highest to lowest: " << endl;

    for (int index = 0; index  < totalMonths; index++)
        cout << year[index] << "\t " << setw(5) << month[index] << endl;
}

这是我的string year[]定义：

string year[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
            "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

Answer 1

就像Blastfurnace所指出的那样，您必须对年份数组进行排序以匹配月份。或者，如果不能，您可以创建一个小结构来表示月份数据。像这样：

typedef struct _monthData{
   double data;
   int monthIndex;
} monthData;

void sortArray(monthData month[], string year[], int totalMonths)
{
    int temp;
    bool swap;
    do
    {
        swap = false;
        for(int count = 0; count < totalMonths - 1; count++)
        {
            if(month[count].data < month[count + 1].data)
            {
                temp = month[count];
                month[count] = month[count + 1];
                month[count + 1] = temp;
                swap = true;
            }
        }
    } while(swap);
    cout << "------------------------------------------------------------" << endl;
    cout << "Here are the months rainfall statistics sorted from highest to lowest: " << endl;

    for (int index = 0; index  < totalMonths; index++)
        cout << year[month[index].monthIndex] << "\t " << setw(5) << month[index] << endl;
}

此致

Answer 2

您是否可以重新排列year数组？在您的交换month值的排序例程中，您可以交换year数组中的相应值。

如果你不想改变year数组，你可以添加一个间接级别。在month和year数组中定义索引数组并对索引进行排序。

int index[12] = { 0,1,2,3,4,5,6,7,8,9,10,11 };

// inside your sort routine...

if(month[index[count]] < month[index[count + 1]])
{
    temp = index[count];
    index[count] = index[count + 1];
    index[count + 1] = temp;
    swap = true;
}

// print the arrays...

for (int count = 0; count  < totalMonths; count++)
    cout << year[index[count]] << "\t " << setw(5) << month[index[count]] << endl;

Answer 3

只有您必须将month[count] < month[count + 1])更改为month[count] > month[count + 1])。因此，您的完整代码将在下面给出：

#include<iostream>
#include<string>
#include<string.h>
#include<iomanip>

using namespace std;

void sortArray(double month[], string year[], int totalMonths)
{
    int temp;
    bool swap;
    do
    {
        swap = false;
        for(int count = 0; count < totalMonths - 1; count++)
        {
            if(month[count] > month[count + 1])
            {
                temp = month[count];
                month[count] = month[count + 1];
                month[count + 1] = temp;
                swap = true;
            }
        }
    } while(swap);
    cout << "------------------------------------------------------------" << endl;
    cout << "Here are the months rainfall statistics sorted from highest to lowest: " << endl;

    for (int index = 0; index  < totalMonths; index++)
        cout << year[index] << "\t " << setw(5) << month[index] << endl;
}

int main()
{
    string year[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
            "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
    double month[] = {12,11,10,9,8,7,6,5,4,3,2,1};
    sortArray(month,year,12);
    return 0;
}

排序输入正在向后运行

3 个答案: