JAVA program: Input an M*N matrix from the console, and output the matrix after exchanging rows and columns.

//Here is the code I wrote. Although a little too much, I may play a joke on the master, but I have been thinking about it for more than an hour. I hope LZ will give points (it will not be effective until I have tested it).

Import java.io.bufferedreader;

Import java.io.ioexception;

Import java.io.inputstreamreader;

Import java.util.scanner;

Public course teacher 1 {

//Input an M*N matrix from the console, and output the matrix after exchanging rows and columns.

Public static void main(String[] args){

Scanner sc = new scanner (system. in);

System.out.println ("Please enter m ...");

int m = sc . nextint()；

System.out.println ("Please enter m ...");

int n = sc . nextint()；

System.out.println ("The m and n you entered are" +m+ "and"+n "respectively);

Boolean allow = false

Do {

allow = false

System.out.println ("Now you need to enter" +m*n+ "integers continuously, separated by commas \ n");

buffered reader br = new buffered reader(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 ("The input length is wrong, please re-enter!" );

allow = true

} Otherwise {

String [][] str2s = new string [m] [n];

int count = 0；

for(int I = 0； I & ltm；; i++){

for(int j = 0； j & ltn； j++){

str2s[I][j]= s[count++]；

}

}

System. Out. println("- as-is array-");

print2Array(str2s，m，n)；

System. Out. println("- replace result-");

replace2Array(str2s，m，n)；

}

}while (allow);

}

private static void print 2 array(String[][]str2s，int m，int n){

for(int I = 0； I & ltm；; i++){

for(int j = 0； j & ltn； j++){

system . out . print("+str2s[I][j]+" ")；

}

system . out . print(" \ n ")；

}

}

private static void replace 2 array(String[][]str2s，int m，int n){

String line[] = new string [m * n];

int count = 0；

for(int I = 0； I & ltn；; i++){

for(int j = 0； j & ltm； j++){

line[count++]= str2s[j][I]；

}

}

count = 0；

String[][] strR2s = new string [n] [m];

for(int I = 0； I & ltn；; i++){

for(int j = 0； j & ltm； j++){

str r2s[I][j]= line[count++]；

}

}

print2Array(strR2s，n，m)；

}

}