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• Array
• Minimum Platform
• Longest consicutive sequence
• String
• Count the number of substrings that start and end with 1
• Palindrome String
• Smallest distinct window
• Longest substring without repeating characters
• String
• Next Greater Element
• The Celebrity Problem
• Linked List
• Check If Circular Linked List
• Delete Middle of Linked List
• intersection of two linked list
• Reverse a linked list
• Tree
• Check for Balanced Treet
• Height of Binary Tree
• Lowest Common Ancestor in a BST
• Sum of Left Leaf Nodes
• Graph
• Find the number of islands
• Rotten Oranges
• Dynamic programming
• 0-1 Knapsack
• Longest Common Subsequence
• Longest Increasing Subsequence
• Longest Mountain in Array
• Sorting
• Bubble Sort
• Heap Sort
• Merge Sort
• Quick Sort