JAVA Help with the ByColumn method! import java.util.*; @SuppressWarnings(\"rawt

Question

JAVA

Help with the ByColumn method!

import java.util.*;

@SuppressWarnings("rawtypes")
public class Table implements Iterable<Comparable[]> {
   private Comparable data[][];
  
   // Creates a table that is a copy of the given input array
   public Table(Comparable data[][]) {
       int rows = data.length;
       int cols = 0;
       if (rows > 0) cols = data[0].length;
       this.data = new Comparable[rows][cols];
       for (int i = 0; i < rows; i++) {
           for (int j = 0; j < cols; j++) {
               this.data[i][j] = data[i][j];
           }
       }
   }

   // Comparator class for comparing with respect to a single column
   public static class ByColumn implements Comparator<Comparable[]> {
       public ByColumn(int col, boolean ascending) {
       }

Explanation / Answer

Here is the code for you:

import java.util.*;
@SuppressWarnings("rawtypes")
public class Table implements Iterable<Comparable[]> {
private Comparable data[][];
  
// Creates a Table that is a copy of the given input array
public Table(Comparable data[][]) {
int rows = data.length;
int cols = 0;
if (rows > 0) cols = data[0].length;
this.data = new Comparable[rows][cols];
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
this.data[i][j] = data[i][j];
}
}
}
}
// Comparator class for comparing with respect to a single column
public static class ByColumn implements Comparator<Comparable[]> {
public ByColumn(int col, boolean ascending) {
   ascending = true;
   for(int i = 0; i < data.length-1; i++)   //For each row.
       if(data[i] >= data[i+1])          
       //If the elements in specified col are not in ascending order, set ascending to false, otherwise set to true.
           ascending = false;
}
}

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