[Solved] What will be the output of this code?int[][] matrix = new int[2][2]; matrix[0][1] = 10; matrix[1][0] = 20; System.out.println(matrix[0][1] + matrix[1][0]); | Java

Java - Arrays

What will be the output of this code?

int[][] matrix = new int[2][2];
matrix[0][1] = 10;
matrix[1][0] = 20;
System.out.println(matrix[0][1] + matrix[1][0]);

A0

B10

C20

D30

Step-by-Step Solution

Solution:

Step 1: Assign values to matrix elements
matrix[0][1] = 10 and matrix[1][0] = 20.
Step 2: Calculate sum and print
Sum is 10 + 20 = 30, which is printed.
Final Answer:
30 -> Option D
Quick Check:
Sum of assigned elements = 30 [OK]

Quick Trick: Sum assigned elements, unassigned default to zero [OK]

Common Mistakes:

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