/*
* This program searches a 2D array for the first occurrence of a given value
* e.g. if the 2D array is
* 3  22 85 43 91
* 54 38 74 1  13
* 65 27 99 17 7
*
*  and the given value is 17, then the program returns the row (2) and column (3)
*  where 17 is stored
*/

public class Search2DArray
{
/**
Searches a 2D array for the first occurrence of a value
@param values two-dimensional array to be searched
@param target number to be searched for
@return an int array of length 2 containing the (zero-indexed) row and column
index of the target, or return a null if the target is not found in the array
*/
public static int[] findValue(int[][] values, int target)
{
 //-----------Start below here. To do: approximate lines of code = 13
 // Write the method
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 //-----------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
}

public static void main(String[] args)
{
int[][] array = { {0, 4, 5}, {2, 4, 9}, {0, 2, 7}, {7, 3, 6} };

for (int target = 0; target < 10; target++)
{
int[] location = findValue(array, target);
System.out.print(target);
if (location == null)
{
System.out.println(" not found");
}
else
{
System.out.println(" found at row " + location[0] + " and column " + location[1]);
}
}
System.out.println("Expected:0 found at row 0 and column 01 not found2 found at row 1 and column 03 found at row 3 and column 1");
System.out.println("4 found at row 0 and column 15 found at row 0 and column 26 found at row 3 and column 2");
System.out.println("7 found at row 2 and column 28 not found9 found at row 1 and column 2");
}
}

Answer rating: 100% (QA)

This program searches a 2D array for the first occurrence of a given value eg if the 2D array is 3 2... View the full answer