Question

JAVA程序：从控制台输入一个M*N矩阵，输出行列互换后的矩阵

Answer 1

//以下是我写的代码，虽然有点儿多，给高手看了可能还惹笑话，但好歹也花了我一个多小时琢磨，希望LZ给分 （本人测试后有效）

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

public class Teacher1 {
//从控制台输入一个M*N矩阵，输出行列互换后的矩阵
public static void main(String[] args){

Scanner sc = new Scanner(System.in);
System.out.println("请输入M...");
int m = sc.nextInt();
System.out.println("请输入M...");
int n = sc.nextInt();

System.out.println("你输入的M和N分别为:"+m+" , "+n);

boolean allow = false;
do{
allow = false;
System.out.println("现在您需要连续输入 "+m*n+"个整数,并以逗号隔开\n");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String line = null;

try {
line = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}

String [] s = line.trim().split(",");
if(s.length != m*n){
System.out.println("输入长度有误，请重输!");
allow = true;
}else{
String [][] str2s = new String[m][n];
int count = 0;
for(int i=0;i<m;i++){
for(int j=0;j<n;j++){
str2s[i][j] = s[count++];
}
}

System.out.println("----数组原样----");
print2Array(str2s, m, n);
System.out.println("----替换结果----");
replace2Array(str2s, m, n);
}
}while(allow);
}

private static void print2Array(String[][] str2s,int m, int n){
for(int i=0;i<m;i++){
for(int j=0;j<n;j++){
System.out.print(" "+str2s[i][j]+" ");
}
System.out.print("\n");
}
}

private static void replace2Array(String[][] str2s, int m, int n){
String line[] = new String[m*n];
int count = 0;
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
line[count++] = str2s[j][i];
}
}

count = 0;
String[][] strR2s = new String[n][m];
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
strR2s[i][j] = line[count++];
}
}
print2Array(strR2s, n ,m);
}

}

Answer 2

撸过 代码自己写 不要复制

Answer 3

稍等一会发给你