range() vs xrange() in Python — what’s the difference? Let’s time-travel a bit 👇 In Python 2: 🔹 range() → Returns a full list 🔹 xrange() → Returns a generator-like object → Creates values on the ...

# the price of a given stock on day i. # Design an algorithm to find the maximum profit. # You may complete at most k transactions. max_buy = [float("-inf") for _ in xrange(k + 1)] max_sell = [0 for _ ...