1.3 Array Operations | Deletion from Array | Explanation with Code | Data Structure
Jenny's Lectures CS IT・2 minutes read
Understanding the deletion process in arrays involves shifting elements and reducing size, with time complexity varying based on the position, with constant time possible for unsorted arrays. The example discussed illustrates this process, emphasizing code writing and index value manipulation for accurate shifting.
Insights
- Understanding the deletion process involves shifting elements and reducing the size of an array by one, achieved through incrementing and decrementing index values.
- Deletion operations on arrays can have varying time complexities, with constant time possible for unsorted arrays, a concept illustrated through code writing and discussion in the provided example.
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Recent questions
How is data deleted from an array?
By shifting elements and reducing array size.
What determines the size of an array?
User input determines the size of an array.
How is the time complexity of deletion affected?
Time complexity varies based on position.
What is the role of memory allocation in arrays?
Memory manager allocates space for arrays.
How are elements initialized in an array?
Elements are initialized based on user input.
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Summary
00:00
Deletion Process in Arrays: Explained and Illustrated
- The example used in the previous video is revisited to explain the deletion operation process.
- Understanding how to delete data from a specific position aids in comprehending deletion from the beginning or end.
- The deletion process is illustrated using a specific example, followed by code writing and discussion on time complexity.
- An array of size 50 is declared, with memory allocation for 200 bytes by the memory manager.
- User input determines the actual size of the array, with 4 bytes allocated for the size variable.
- Elements of the array are initialized at runtime based on user input.
- Deleting data from a specific position involves shifting elements and reducing the size by one.
- A loop is initiated to shift elements accordingly, updating the array after each shift.
- The process involves incrementing and decrementing index values to ensure accurate shifting.
- The time complexity of deletion varies based on the position, with constant time possible for unsorted arrays.
