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by moufestaphio
2957 days ago
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For DP? Practice a couple on like HackerRank, CodeFights etc.
It starts to make sense after you do a few. For Big O notation? Just think about how many times you're iterating through things (in the worst possible case). e.g.
Got two nested for loops each going to N.. we're going to loop N on the outer loop, so and each iteration of the inner loop we go through N times? that's N x N so O(N^2).. (easy example obviously). |
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