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C# Interview Prep

68 problems

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Category

All Array Backtracking Binary Search Design Dynamic Programming Graph Greedy Hash Map Heap Math Sliding Window Sorting Stack String Tree Two Pointers

Status:

All ✓ Solved Not solved

Difficulty:

Showing 68 problems

36Regular Expression MatchingDynamic Programminghard
37Burst BalloonsDynamic Programminghard
38Number of IslandsGraphmedium
39Alien DictionaryGraphhard
40Jump GameGreedymedium
41Task SchedulerGreedymedium
42First Unique Character in a StringHash Mapeasy
43Top K Frequent ElementsHash Mapmedium
44Kth Largest Element in an ArrayHeapmedium
45Roman to IntegerMatheasy
46Power of TwoMatheasy
47Sum of DigitsMatheasy
48Armstrong NumberMatheasy
49Permutation in StringSliding Windowmedium
50Minimum Size Subarray SumSliding Windowmedium
51Minimum Window SubstringSliding Windowhard
52Merge IntervalsSortingmedium
53Valid ParenthesesStackeasy
54Longest Valid ParenthesesStackhard
55Largest Rectangle in HistogramStackhard
56Reverse StringStringeasy
57Valid AnagramStringeasy
58Reverse Words in a StringStringeasy
59Longest Common PrefixStringeasy
60Count VowelsStringeasy
61Count Words in a StringStringeasy
62Longest Substring Without Repeating CharactersStringmedium
63Group AnagramsStringmedium
64Count Good Nodes in Binary TreeTreemedium
65Serialize and Deserialize Binary TreeTreehard
66Move ZeroesTwo Pointerseasy
67Is Palindrome StringTwo Pointerseasy
68Container With Most WaterTwo Pointersmedium

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