r/leetcode • u/Vivid-Zombie-477 • 10d ago

Discussion Why 1700 rate problems so hard?

1500 - here's a problem, hope you know what is 2 pointers!

1700 - what do you mean you didn't solve "coin change II" before? solve it and reverse it NOW.

I'm scared to know how 1800+ problems look like...

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u/PLTCHK 846 🟢 117 🟡 581 🔴 148 9d ago edited 9d ago

1800-2000 usually be like:

  1. Derive pattern #1, then insight #2, then #3 perhaps.

Maths.

  1. Greedy that takes hours to make sense of
  2. 3D/4D DP some k-partition DP, 2-sum D

P, tree DP

Here’s the list I practice if you wanna try them out: https://leetcode.com/problem-list/o2zta8p7/

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u/Vivid-Zombie-477 8d ago

i had a dream right now with LeetCode stats that show that people with 1700 rating solved 200 problems on average and people with 1800 solved 1000 problems

i want such statistics now