Solution: Jewels and Stones
Understand how to solve the Jewels and Stones problem by using hash maps for fast membership checking. Learn to count characters in stones that match jewel types with a case-sensitive approach, and analyze the algorithm’s time and space complexity.
We'll cover the following...
We'll cover the following...
Statement
You are given two strings, jewels and stones. Each character in jewels represents a stone type that is a jewel, and each character in stones represents a stone you have. Count how many characters in stones belong to the set of characters in jewels.
Note: Matching is case-sensitive, so
'a'and'A'are different types of stones.
Constraints:
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