Solution: Jewels and Stones
Explore how to solve the Jewels and Stones problem by implementing hash maps to count matches efficiently. Understand case-sensitive membership checking, optimize time and space complexity, and apply this pattern to coding interviews.
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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