Assume int[][] x = {{1, 2}, {3, 4}, {5, 6}}, what are x.length and x[0].length? Group of answer choices3 and 32 and 23 and 22 and 3
Question
Assume int[][] x = {{1, 2}, {3, 4}, {5, 6}}, what are x.length and x[0].length? Group of answer choices3 and 32 and 23 and 22 and 3
Solution
The correct answer is 3 and 2.
Here's why:
In Java, the length property can be used to find the size of an array.
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x.length: This gives the number of rows in the 2D array. Since there are 3 sub-arrays within the main array (i.e., {1, 2}, {3, 4}, {5, 6}), x.length will be 3.
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x[0].length: This gives the number of columns in the first row (i.e., the length of the first sub-array). Since the first sub-array {1, 2} has 2 elements, x[0].length will be 2.
So, the answer is 3 and 2.
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