In this module, we will cover additional topics that include difference arrays, tries, bit manipulation, and Dijkstra’s Algorithm.
- Difference arrays
- Tries
- Bit manipulation
- Dijkstra’s Algorithm
- Hamming Distance
- Cheapest Flights Within K Stops
- Implement Trie
- Insert Interval
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What is a trie used for?
- A) Storing strings in a space-efficient manner
- B) Searching for words
- C) Both A and B
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In Dijkstra's algorithm, what is the main strategy?
- A) To find the shortest path in a graph
- B) To sort the graph
- C) To minimize the number of edges
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What is the Hamming Distance?
- A) The number of positions at which two strings of equal length differ
- B) The number of common characters between two strings
- C) The sum of characters in two strings
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What is the time complexity of inserting a string into a trie?
- A) O(n)
- B) O(m)
- C) O(n * m), where n is the number of strings and m is the length of the longest string
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How do you calculate the cheapest flights within K stops?
- A) By using dynamic programming
- B) By using breadth-first search (BFS)
- C) By using depth-first search (DFS)