转换一维Arrary到二维在C ++中 [英] Convert One Dimensional Arrary to Two Dimensional in C++

问题描述

我有一个49空间一维数组声明为 INT boardArray [49]; 我也有一个二维的7x7阵列声明为 INT boardArrayTwo [7] [7] 我试图使用嵌套的for循环的一维数组扔到这里的二维数组是我使用来测试它的code。

 的for（int i = 0; I＆GT; 50; ++ I）
{
    boardArray [我] =我; //填满了整数0阵列 -  48测试
}
为（中间体X = 0; X＆GT = 7 ++ x）的
{
    对于（INT K = 0; K＆GT; = 7; ++ K）
    {
        对于（INT N = 0; N＆GT; = 49; ++ N）
        {
            boardArrayTwo [X] [K] = boardArray [n]的;
            COUT＆LT;＆LT; boardArrayTwo [X] [k]的＆下;＆下; ＆LT;＆LT; ENDL;
        }    }
}
 

我试图运行这个，但没有任何反应。我是不是做错了？

解决方案

 的for（int x = 0; X＆GT; = 7; ++ x）的
{
    对于（INT K = 0; K＆GT; = 7; ++ K）{
         对于（INT N = 0; N＆GT; = 49; ++ N）
    {
 

这是错误的。 X和K在＆LT; 7（且不应被用于第三周期）

 的for（int x = 0; X 7; ++ x）的
{
    为（中间体K = 0; K＆7; ++ K）{
        boardArrayTwo [X] [K] = boardArray [7 * X + K];
 

编辑：

像@Fabio Ceconello让我在他的评论中发现，即使是第一个循环是错误的，因为倒条件检查的，应当修改这种方式：

 的for（int i = 0; I＆LT; 49; ++ I）
{
    boardArray [我] =我; //填满了整数0阵列 -  48测试
}
 

I have a 49 space one dimensional array declared as int boardArray [49]; and I also have a two dimensional 7x7 array declared as int boardArrayTwo [7][7]' I am trying to use nested for loops to throw the one dimensional array into the two dimensional array here is the code I am using to test it.

for (int i = 0; i > 50; ++i)
{
    boardArray[i] = i; //fills the array with ints 0 - 48 to test
}
for (int x = 0; x >= 7; ++x)
{
    for (int k = 0; k >= 7; ++k)
    {
        for (int n = 0; n >= 49; ++n)
        {
            boardArrayTwo[x][k] = boardArray[n];
            cout << boardArrayTwo[x][k] << " " << endl;
        }

    }
}

I tried running this but nothing happens. Am I doing it wrong?

解决方案

for (int x = 0; x >= 7; ++x)
{
    for (int k = 0; k >= 7; ++k){
         for (int n = 0; n >= 49; ++n)
    {

this is wrong. x and k should be < 7 (and the third cycle shouldn't be used) :

for (int x = 0; x < 7; ++x)
{
    for (int k = 0; k < 7; ++k){
        boardArrayTwo[x][k] = boardArray[7*x + k];

EDIT:

like @Fabio Ceconello make me notice in his comment, even the first loop is wrong because of the inverted condition checks, it should be modified this way:

for (int i = 0; i < 49; ++i)
{
    boardArray[i] = i; //fills the array with ints 0 - 48 to test
}

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