pictures rotating

R7-17 Image rotation (30 branch )

A two-dimensional picture consists of pixels , Currently, grayscale images use a 0-255 The integer between represents the pixel value of a pixel point . Program to complete the picture rotation control program .

This topic requires reading 2 It's an integer m and n（<=20）, As the length and width of the picture . Input 1 It's an integer r, As the angle of rotation （ Input only 90 180 -90 One of them ,90 Indicates that the graph rotates to the left 90 degree ,-90 Indicates that the graph rotates to the right 90 degree ）. Then enter the pixel value of the picture according to the row and column ,

Input format :

first line ：2 It's an integer m and n（<=20）

The second line ：2 It's an integer r（ Can only be 90 180 -90 One of them , Otherwise prompt ：angle data error

After the third line ： Input m That's ok n Integer data of column , Must be in 0-255 Between , Otherwise prompt ：matrix data error

All the above inputs are integers , If there is non integer data input , Unified tips ：data type error

Output format :

Rotate the image matrix data as required

sample input :

Here's a set of inputs . for example ：

3 4
90
1 2 3 4
5 6 7 8
9 10 11 12

sample output :

Here is the corresponding output . for example ：

4 8 12
3 7 11
2 6 10
1 5 9

R7-17  Image rotation  (30  branch )
 A two-dimensional picture consists of pixels , Currently, grayscale images use a 0-255 The integer between represents the pixel value of a pixel point . Program to complete the picture rotation control program .

 This topic requires reading 2 It's an integer m and n（<=20）, As the length and width of the picture . Input 1 It's an integer r, As the angle of rotation （ Input only 90 180 -90 One of them ,90 Indicates that the graph rotates to the left 90 degree ,-90 Indicates that the graph rotates to the right 90 degree ）. Then enter the pixel value of the picture according to the row and column ,

 Input format :
 first line ：2 It's an integer m and n（<=20）

 The second line ：2 It's an integer r（ Can only be 90 180 -90 One of them , Otherwise prompt ：angle data error

 After the third line ： Input m That's ok n Integer data of column , Must be in 0-255 Between , Otherwise prompt ：matrix data error

 All the above inputs are integers , If there is non integer data input , Unified tips ：data type error

 Output format :
 Rotate the image matrix data as required 

 sample input :
 Here's a set of inputs . for example ：

3 4
90
1 2 3 4
5 6 7 8
9 10 11 12

3 4
180
1 2 3 4
5 6 7 8
9 10 11 12
 sample output :
 Here is the corresponding output . for example ：

4 8 12
3 7 11
2 6 10
1 5 9

import java.util.Scanner;

public class J_17 {

	public static void main(String[] args) {
		// TODO  Automatically generated method stubs 
		@SuppressWarnings("unused")
		int a = 0, b = 0, c = 0, f = 0;
		@SuppressWarnings("unused")
		int i = 0, j = 0;
		@SuppressWarnings("unused")
		int d[][] = new int[21][21];
		@SuppressWarnings({ "unused", "resource" })
		Scanner sc = new Scanner(System.in);
		if (sc.hasNextInt()) {
			a = sc.nextInt();
		} else {
			f = 1;
		}
		if (sc.hasNextInt()) {
			b = sc.nextInt();
		} else {
			f = 1;
		}
		if (sc.hasNextInt()) {
			c = sc.nextInt();
			if (c != 90 && c != -90 && c != 180) {
				System.out.println("angle data error");
			} else {
				for (i = 0; i < a; i++) {
					for (j = 0; j < b; j++) {
						if (sc.hasNextInt()) {
							d[i][j] = sc.nextInt();
						} else {
							f = 1;
						}
						if (!(d[i][j] >= 0 && d[i][j] <= 255)) {
							System.out.println("matrix data error");
						}
					}
				}
				if (f == 1) {
					System.out.println("data type error");
				} else if (c == 90) {
					for (i = b - 1; i >= 0; i--) {
						for (j = 0; j < a; j++) {
							if (j == 0)
								System.out.print(d[j][i]);
							else
								System.out.print(" " + d[j][i]);
						}
						System.out.print("\n");
					}
				} else if (c == -90) {
					for (i = 0; i < b; i++) {
						for (j = a - 1; j >= 0; j--) {
							if (j == a - 1)
								System.out.print(d[j][i]);
							else
								System.out.print(" " + d[j][i]);
						}
						System.out.print("\n");
					}
				} else {
					for (i = a - 1; i >= 0; i--) {
						for (j = b - 1; j >= 0; j--) {
							if (j == b - 1)
								System.out.print(d[i][j]);
							else
								System.out.print(" " + d[i][j]);
						}
						System.out.print("\n");
					}

				}
			}
		} else {
			f = 1;
			System.out.println("angle data error");
		}
	}

}