SproutStack🌱 DSA (Beginner) · Core Patterns · cozy lesson
Sorting Basics
10 min · 1 min read · no scary math, promise
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nums = [5, 2, 9, 1]
nums.sort() # in place, Timsort O(n log n)
intervals = sorted(intervals) # then linear merge
Rule: if order unlocks two pointers/merge/greedy, pay the sort.
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Check your understanding
Correct answers earn XP (once each).
1. Sort first when…
2. Python sort cost?
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