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[Yehor0820]

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[mateacademy-ai-mentor]

Review Summary

I am requesting changes because there are still a few explicit checklist violations that must be fixed before this task can be considered complete. Functionally your ArrayList implementation is solid (correct default capacity, 1.5x growth, custom exceptions, and required methods), but the checklist is part of the core requirements for this task.

Critical issues that must be fixed:

1. There is a redundant blank line at the start of the class implementation in src/main/java/core/basesyntax/ArrayList.java (just before the constructor), which violates [CHECKLIST ITEM #1]; remove any leading empty lines directly inside the class or method bodies.
2. The resize logic currently uses a hardcoded 2 in elements.length + elements.length / 2; per [CHECKLIST ITEM #3], extract this growth factor into a clearly named constant (for example, private static final int GROWTH_DIVISOR = 2;) and use it in the calculation.
3. In ensureCapacity(), you copy elements with a manual for loop; [CHECKLIST ITEM #8] requires using System.arraycopy, so replace the loop with something like System.arraycopy(elements, 0, newArray, 0, elements.length).

Minor (non-blocking) improvement: in add(value, index) you could validate the index before calling ensureCapacity() to avoid unnecessary resizing. Once you address the three checklist issues above, your solution will fully meet both functional and style requirements for this task.

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[mateacademy-ai-mentor]

This violates checklist item #1: "Don't begin class or method implementation with an empty line. Remove all redundant empty lines." There is a redundant empty line immediately before the constructor; remove redundant blank lines that begin class/method implementations to satisfy the checklist.

[mateacademy-ai-mentor]

This violates checklist item #3: "Any magic numbers should be constants\nYour code should be easy to read. Move all hardcoded values to constant fields and give them informative names." The growth calculation uses the literal 2 in elements.length + elements.length / 2. Extract the growth factor into a named constant (for example GROWTH_DIVISOR or GROWTH_MULTIPLIER) and use it in the resize calculation.

[mateacademy-ai-mentor]

This violates checklist item #8: "Use [System.arraycopy()] to move your array elements." In ensureCapacity() you copy elements with an explicit for-loop; replace the loop with System.arraycopy(elements, 0, newArray, 0, elements.length) so element movement uses the required API.