Java: Swap 2D array rows that contain minimum and maximum values

Question

I'm having problems making a function that would swap a 2Dimensional Arrays rows, that include the biggest and the smallest values.

I cant think of a way how to make it into a code. I need a helping hand. I tried to edit the code of min and max value in an array to give me the row index of the biggest and smallest numbers but i got confused and im not sure how to do it. Pls help me on how to get the arrays row index of the max and min values so I can put it into the row switching function.

ANSWER EXAMPLE:
if the array was like this:
5   2  1  8
15 -4  5  18
7   3  44 9
12  1  18 76 
it would swap it like this:
5   2  1  8
12  1  18 76
7   3  44 9
15 -4  5  18

import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        {
        
        final int kolonna = (int) (Math.random()*(9-1+1)+1);
        final int rinda = (int) (Math.random()*(9-1+1)+1);
        
        int [][] arr = new int [kolonna][rinda];
            
        //fill the grid
        for (int rin = 0; rin < arr.length; rin++) {
            
            for (int kol = 0; kol < arr[rin].length; kol++) {
                
                arr[rin][kol] = (int) (Math.random() * 201) - 100;
            }
        }
print2Dmas(arr);
System.out.println();
int mazs=0;
int liels=0;
for (int i = 0; i < arr.length; i++) {
    int minInRow = arr[i][0];
    int maxInRow = arr[i][0];
    for (int j = 0; j < arr[i].length; j++) {
        if (minInRow > arr[i][j]) {
            minInRow = arr[i][j];
            mazs = j;
        }

        if (maxInRow < arr[i][j]) {
            maxInRow = arr[i][j];
            liels = j;
        }
    }}
exchangeAnyTwoRows(arr,mazs,liels);
      }
    }   
    public static void print2Dmas(int mas[][]) {
        for(int i = 0; i < mas.length; i++) {

            for(int j = 0; j < mas[i].length; j++) {
                    
                System.out.print(mas[i][j] + " ");
                //System.out.println();
            }
            System.out.println();
        }
    }

    public static void exchangeAnyTwoRows(int[][] matrix,int K, int L){
for (int i = 0; i < matrix[0].length; i++) {

int temp = matrix[K - 1][i];
matrix[K - 1][i] = matrix[L - 1][i];
matrix[L - 1][i] = temp;
}
print2Dmas(matrix);
}
}

Answer 1

Store the row with the min and max value:

for (int i = 0; i < arr.length; i++) {
int rowWithMin = arr[i][0];
int rowWithMax = arr[i][0];
    for (int j = 0; j < arr[i].length; j++) {
        if (rowWithMin > arr[i][j]) {
            rowWithMin = i;
            mazs = j;
        }

        if (rowWithMax < arr[i][j]) {
            rowWithMax = i;
            liels = j;
        }
    }
}

Then you can check if rowWithMin == rowWithMax . If not, swap the two rows for example like this:

public static void swapRows(int array[][], int rowA, int rowB) {
   int tmpRow[] = array[rowA];
   array[rowA] = array[rowB];
   array[rowB] = tmpRow;
}

Reference: Array swap - 2d array

Other example: Swapping rows of double 2d array java