글 읽기 - 입출력과정에서 런타임에러가나는것같은데 이유를 알고싶습니다

jsw782 3년 전 0

입출력과정에서 런타임에러가나는것같은데 이유를 알고싶습니다

import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.IOException;

public class 배열돌리기3 {
	static int n,m,r;
	static int a[][];
	static int op;
	public static void main(String[] args) throws IOException {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine()," ");
		n = Integer.parseInt(st.nextToken());
		m = Integer.parseInt(st.nextToken());
		r = Integer.parseInt(st.nextToken());
		
		a = new int[n][m];
		for(int i=0;i<n;i++) {
			st = new StringTokenizer(br.readLine()," ");
			for(int j=0;j<m;j++) {
				a[i][j]=Integer.parseInt(st.nextToken());
			}
		}

		op = Integer.parseInt(br.readLine());
		while(r-->0) {
			if(op==1) {
				a=operation1(a);
			}
			else if(op==2) {
				a=operation2(a);
			}
			else if(op==3) {
				a=operation3(a);
			}
			else if(op==4) {
				a=operation4(a);
			}
			else if(op==5) {
				a=operation5(a);
			}
			else if(op==6) {
				a=operation6(a);
			}
		}
		for(int i=0;i<a.length;i++) {
			for(int j=0;j<a[i].length;j++) {
				System.out.print(a[i][j]+" ");
			}
			System.out.println();
		}
	}
	
	static int[][] operation1(int[][] a) {//상하반전
		int n = a.length;
		int m = a[0].length;
		int ans[][] = new int[n][m];
		for(int i=0;i<n;i++) {
			for(int j=0;j<m;j++) {
				ans[i][j]=a[n-i-1][j];

			}
		}

		return ans;
	}
	static int[][] operation2(int[][] a) {
		int n=a.length;
		int m = a[0].length;
		int ans[][] = new int[n][m];
		for(int i=0;i<n;i++) {
			for(int j=0;j<m;j++)
			{
				ans[i][j]=a[i][m-j-1];
			}
		}
		return ans;
	}
	static int[][] operation3(int[][] a) {
		int n=a.length;
		int m=a[0].length;
		int ans [][] = new int[m][n];
		for(int i=0;i<m;i++) {
			for(int j=0;j<n;j++){
				ans[i][j]=a[n-j-1][i];
			}
		}
		return ans;
	}
	static int[][] operation4(int[][] a) {
		
		int n = a.length;
		int m = a[0].length;
		int ans [][] = new int[m][n];
		for(int i=0;i<m;i++) {
			for(int j=0;j<n;j++) { 
				ans[i][j]=a[j][m-i-1];	
			}
		}
		return ans;
	}
	
	static int[][] operation5(int[][] a) {
		int n = a.length;
		int m = a[0].length;
		int [][]ans = new int[n][m];
		for(int i=0;i<n/2;i++) {
			for(int j=0;j<m/2;j++) {
				ans[i][j+m/2]=a[i][j];
				ans[i+n/2][j+m/2]=a[i][j+m/2];
				ans[i+n/2][j]=a[i+n/2][j+m/2];
				ans[i][j]=a[i+n/2][j];
			}
		}
		return ans;
	}
	static int[][] operation6(int[][] a) {
		int n = a.length;
		int m = a[0].length;
		int [][]ans = new int[n][m];
		for(int i=0;i<n/2;i++) {
			for(int j=0;j<m/2;j++) {
				ans[i][j]=a[i][j+m/2];
				ans[i][j+m/2]=a[i+n/2][j+m/2];
				ans[i+n/2][j+m/2]=ans[i+n/2][j];
				ans[i+n/2][j]=a[i][j];
				
			}
		}
		return ans;
	}
	
}

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입출력과정에서 런타임에러가나는것같은데 이유를 알고싶습니다

jsw782 3년 전 0

Baekjoon Online Judge

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