‹ The Blind 75 · Arrays
Best Time to Buy and Sell Stock
Given a price for each day, find the biggest profit from buying on one day and selling on a later one, or 0 if no sale earns anything.
Three trials
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0 of 1 stars
1 · Recall
Fill single lines: a condition, an update, a return.
Worth 10 XP
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0 of 1 stars
2 · Rebuild
Rebuild a block, most often a loop body.
Worth 20 XP
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0 of 1 stars
3 · Write
Write the whole function body, with the tests as a net.
Worth 40 XP