# Daily Coding Problem

- [Count Primes (Leetcode 204) (Sieve of Eratosthenes) (DCP](/dsa-in-python/daily-coding-problem/count-primes-leetcode-204-sieve-of-eratosthenes-dcp.md)
- [\*\*\*Serialize and Deserialize Binary Tree (Leetcode 297) (DCP 3)](/dsa-in-python/daily-coding-problem/serialize-and-deserialize-binary-tree-leetcode-297-dcp-3.md): BFS Method
