如何在单个函数中切换数组中的元素? [英] How to switch elements in an array in a single function ?

问题描述

嗨.我是C ++的新手，我一直在研究大学的程序，但遇到了一些问题.问题是，我需要在一个函数中的单个数组中输入7个元素，而我确实这样做了.现在，我必须在数组中找到最小和最大的元素，并在另一个函数中切换它们的位置.我怎么做 ? (这不是家庭作业，这是我的个人锻炼)该功能应如下所示:

void switch(float array []，int v)//v是数组的const int大小


帮助将不胜感激. :)

Hi. I''m a bit of a newbie in C++, and I''v been working on a program from college and I got a little problem. The thing is, i need to enter 7 elements in a single array in one function, which I did. Now I have to find the smallest and the biggest element in the array and switch their places in another function. How do I do that ? (It is NO homework, it''s my personal exercising) The function should look like this:

void switching(float array[], int v) //v is the const int size of the array


Help would be appreciated. :)

推荐答案

看起来像这样:

Would look something like this:

// method to switch two elements in an array
void switching(float[] array, int positionX, int positionY)
{
    float temp = array[positionX];
    array[positionX]  = array[positionY];
    array[positionY] = temp;
}

那里有一个方法可以切换数组中的两个元素.
您可以从其他函数中调用该函数，例如:

There you have a method that switches two elements in an array.
You''d call that from you other function like this:

...
switching(array, idxOfBiggest, idxOfSmallest);
...

其中idxOfBiggest和idxOfSmallest是最大和最小数组元素的索引.

干杯！

where idxOfBiggest and idxOfSmallest are the indices of the biggest and the smallest array element.

Cheers!

选项一:

1. 选择排序算法，实现它.
2. 使用编码算法find max& min(例如v[max]，v[min]).


3. 用通常的

1. Choose the sort algorithm, implement it.
2. Using the coded algo find max & min (say v[max], v[min]).


3. Swap v[max] and v[min] with the usual

float tmp = v[max]; v[max] = v[min]; v[min] = tmp

您可以将点(1)替换为:
使用现有的排序方法，例如STL sort [

You may replace point (1) with:
Use an existing sorting method, like, for instance STL sort[^].

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