Added solution for day 24 problem in java and c++

[mishraditi]

🚀 What does this PR do?

• Adds solution for LeetCode Daily Challenge on Wednesday and 23rd October in Java and C ++.
• Briefly explain the approach taken to solve the problem:
• The approach taken in the provided solution solves the problem by converting the array of digits into an integer, incrementing the integer by 1, and then converting it back to an array of digits.

📝 Issue Reference:

https://github.com/arya2004/leetcode-daily-october-hacktoberfest-2024/tree/main/solutions/day24
Fixes issue: #24

🔍 Checklist:

Please ensure the following before submitting your PR:

• [✔] I have placed my solution in the correct folder (solutions/day24/).
• [ ✔] My code follows clean coding practices and is efficient.
• [ ✔] I have added comments in my code to explain the approach.
• [ ✔] I have updated the README.md for the specific day with a brief explanation of my solution.
• [ ✔] I have tested the solution on LeetCode and it works correctly.

🔧 Solution Details:

• Language Used: (Java and C++
• Time Complexity: (e.g., O(n log n), O(n), etc.)
• Space Complexity: (e.g., O(1), O(n), etc.)