Count All 2s between 0 to n.
Algorithm:
- Iterate from 2 to n
- For each number count number 2s present in it
- Update total_2s_counter
- Return total_2s_counter
Latest Source Code:
Github: CountAll2s.java
Output:
All 2's till n=2: 1 All 2's till n=4: 1 All 2's till n=12: 2 All 2's till n=22: 6 All 2's till n=32: 14