【发布时间】:2016-12-08 18:16:42
【问题描述】:
我有两种算法将随机二维数组(m х n 或 m х m)转换为一维数组。我想知道是否有办法让它们在相反的方向上工作并将结果转换为一维数组以保存数字的顺序。这是我的程序的完整代码和一张图片,看看我的两种算法是如何工作的。enter image description here 代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using static System.Math;
namespace MyProgram
{
public class Program
{
public static void Main(string[] args)
{
Console.Write("Enter number of rows:");
int n = int.Parse(Console.ReadLine());
Console.Write("Enter number of columns:");
int m = int.Parse(Console.ReadLine());
int[] arr1 = new int[n * m];
int[,] arr2 = new int[n, m];
int choice;
do
{
Console.WriteLine("Select option:");
Console.WriteLine("\t1: Diagonal");
Console.WriteLine("\t2: Spiral");
Console.WriteLine("\t3: Exit");
Console.Write("Your selection: ");
choice = int.Parse(Console.ReadLine());
switch (choice)
{
case 1:
{
SetArray(arr2);
PrintArray(arr2);
Diagonal(arr2, arr1);
PrintArray(arr1);
break;
}
case 2:
{
SetArray(arr2);
PrintArray(arr2);
Spiral(arr2, arr1);
PrintArray(arr1);
break;
}
}
Console.WriteLine();
Console.WriteLine();
} while (choice != 5);
}
static void Diagonal(int[,] array2, int[] array1)
{
int k = 0;
int row = 0;
int col = 0;
while (k < array1.Length)
{
array1[k] = array2[row, col];
if ((row + col) % 2 == 0)
{
if ((row == 0) && (col != array2.GetLength(1) - 1)) { col++; }
else
{
if (col == array2.GetLength(1) - 1) { row++; }
else { row--; col++; }
}
}
else
{
if ((col == 0) && (row != array2.GetLength(0) - 1)) { row++; }
else
{
if (row == array2.GetLength(0) - 1) { col++; }
else { row++; col--; }
}
}
k += 1;
}
}
private static void Spiral(int[,] array2, int[] array1)
{
int lengthX = array2.GetLength(0);
int lengthY = array2.GetLength(1);
int Product = lengthX * lengthY;
int CorrectY = 0;
int CorrectX = 0;
int Count = 0;
while (lengthX > 0 && lengthY > 0)
{
for (int j = CorrectY; j < lengthY && Count < Product; j++)
{
array1[Count] = array2[CorrectX, j];
Count++ ;
}
CorrectX++;
for (int i = CorrectX; i < lengthX && Count < Product; i++)
{
array1[Count] = array2[i, lengthY - 1];
Count++ ;
}
if (lengthY > 0 && lengthX > 0) lengthY-- ;
else break;
for (int j = lengthY - 1; j >= CorrectY && Count < Product; j--)
{
array1[Count] = array2[lengthX - 1, j];
Count++ ;
}
if (lengthY > 0 && lengthX > 0) lengthX-- ;
else break;
for (int i = lengthX - 1; i >= CorrectX && Count < Product; i--)
{
array1[Count] = array2[i, CorrectY];
Count++ ;
}
CorrectY++;
}
}
public static void SetArray(int[,] arr)
{
Random r = new Random();
for (int i = 0; i < arr.GetLength(0); i++)
{
for (int j = 0; j < arr.GetLength(1); j++)
{
arr[i, j] = r.Next(11, 99);
}
}
}
public static void SetArray(int[] arr)
{
Random r = new Random();
for (int i = 0; i < arr.Length; i++)
{
arr[i] = r.Next(11, 99);
}
}
public static void PrintArray(int[] arr)
{
Console.Write("print 1d array:");
for (int i = 0; i < arr.Length; i++)
{
Console.Write(arr[i] + " ");
}
Console.WriteLine();
}
public static void PrintArray(int[,] arr)
{
Console.WriteLine("print 2d array:");
for (int i = 0; i < arr.GetLength(0); i++)
{
for (int j = 0; j < arr.GetLength(1); j++)
{
Console.Write(arr[i, j] + " ");
}
Console.WriteLine();
}
}
}
}
【问题讨论】:
-
“让它们朝相反的方向工作”是指将一维数组通过对角线、螺旋线等方法转换为二维数组吗?
-
@Alessandro Scarlatti 是的,获取结果(一维数组)并将其转换回二维数组(在我的图片数组中,两种方法都是相同的)。
-
您应该能够非常简单地反转
spiral和diagonal方法的逻辑。您是想具体了解如何执行此操作,还是要问其他问题? -
@Alessandro Scarlatti 我只是不知道如何将该逻辑应用于一维数组。我知道列数和行数,但我不明白如何正确填写它们。