Most DSA problems feel hard not because they are complex, but because we jump into implementation too early.
Before coding, answer these questions:
If the same subproblem repeats → think recursion + memoization.
If yes → two pointers often apply.
Think prefix / suffix.
If yes → greedy. If not → dynamic programming.
Choosing the right pattern simplifies the solution before a single line of code is written.
- CodeWithIshwar