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April

Goal​

  1. Recursion
  2. Bit Manipulation
    1. 14 March, 2026 ✔
    2. 19 March, 2026 ✔
  3. Sliding Window
    1. 06 April, 2026 ✔
  4. Array
  5. 900 Rating: 50
  6. 1000 Rating: 50

Week 01​

05 April, 2026​

  1. https://codeforces.com/contest/2195/problem/A
    1. 17 March, 2026: 00.25.19 ❌
      • Failed at edge case
        • When you select elements, the product is defined as:
          • If you pick multiple numbers → multiply them all
          • If you pick one number → the product is just that number itself
  2. https://leetcode.com/problems/merge-close-characters/
    1. 05 April, 2026: 00.44.24 ❌
      • Intitution was right
        • You can erase string
        • Make sure the index are organize, not messy
  3. https://leetcode.com/problems/minimum-operations-to-make-array-parity-alternating/
    1. 05 April, 2026: 00.43.25 ❌
      • Intitution was right
      • Follow parity counting approach

06 April, 2026​

  • Task/Note 3

07 April, 2026​

  • Task/Note 3

08 April, 2026​

  • Task/Note 3

09 April, 2026​

  • Task/Note 3

10 April, 2026​

  • Task/Note 3

11 April, 2026​

  • Task/Note 3

Week 02​

12 April, 2026​

13 April, 2026​

14 April, 2026​

15 April, 2026​

16 April, 2026​

17 April, 2026​

18 April, 2026​

Week 03​

19 April, 2026​

20 April, 2026​

21 April, 2026​

22 April, 2026​

23 April, 2026​

24 April, 2026​

25 April, 2026​

Week 04​

26 April, 2026​

27 April, 2026​

28 April, 2026​

29 April, 2026​

30 April, 2026​

01 May, 2026​

02 May, 2026​