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2D Array Basics

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2D Array Basics MCQ Practice

2D Array Basics Java practice with 15 questions, code tracing, and a worked explanation for every answer.

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Code Tracing 01 - 2D Array Basics: track the final printed value.

int[][] grid = {{2, 5, 1}, {4, 3, 6}, {7, 0, 8}};
int total = 0;
for (int r = 0; r < grid.length; r++) {
  int c = (r + 0) % grid[r].length;
  total += grid[r][c] * (r + 1);
}
System.out.print(total);

A29B32C36D34