If you declare an array double[] list = new double[5], the highest index in the array is ________. Group of answer choices012345

Break Down the Problem

1. Understand how arrays are indexed in programming languages.
2. Determine the size of the array and derive the highest index from it.

Relevant Concepts

• In most programming languages such as Java, C#, and others, array indexing starts at 0.
• The highest index can be calculated as the size of the array minus one.

Analysis and Detail

1. The array declared is of size 5.
2. Therefore, the indices for this array will be as follows:
   • Index 0
   • Index 1
   • Index 2
   • Index 3
   • Index 4
3. The highest index in this array would be: $\text{Highest Index} = \text{Size of Array} - 1 = 5 - 1 = 4$

Verify and Summarize

• The array has 5 elements, and since indexing starts at 0, the valid indices are 0 to 4.

Final Answer

The highest index in the array is 4.