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Articles tagged with #algorithms
Problem Problem_Link Problem Solving Approach To traverse a binary tree in in-order, we use depth-first search (DFS). The problem also requires us to solve it using a simple loop, so it tests our ability to convert between while loops and recursive...
Problem Problem_Link Problem Solving Approach Traverse through all the numbers in the intervals and store their frequencies in a HashMap. Sort the hashmap based on the keys.→in worst case, O(n log n) Find the maximum powerful integer by iterating ...
Problem Problem_Link Problem Solving Approach Odd digit numbers have a pattern | 1 | 3 | 5 | 7 | 9 | | --- | --- | --- | --- | --- | | 11 | 13 | 15 | 17 | 19 | | 31 | 33 | 35 | 37 | 39 | | 51 | 53 | 55 | 57 | 59 | | 71 | 73 | 75 | 77 | 7...
Definition of substring A sequence of consecutive characters within a larger string. In other words, it is a smaller string that is written without changing the order of the characters selected from the original string or skipping any characters in t...
Problem Problem_Link Solution Given: a sorted array Condition: Convert to wave array, where the elements are sorted in wave-like order (higher, lower, higher) Condition2: lexicographically smallest. Given the values and conditions, we can solve ...