Stack vs Heap: Your Variable Isn't Where You Think

When assigning an array to a new variable, the array itself is not copied, but a reference to it is. This can lead to unexpected changes when modifying one variable, as it affects the original array. To avoid this, use the 'new' keyword to create a new array when reassigning a variable. This is because variables hold references, not the actual data, and these references are stored on the stack, while the data is stored on the heap. This is a key concept in understanding how variables work in programming, particularly when working with objects and arrays.