Two Pointers

How To: Two Pointers

• Remove N-th node from end of list
• Partition list
• Linked list cycle
• Linked list cycle II
• Reorder list
• Two sum II - input array is sorted
• 3sum smaller
• Move zeroes
• Find the duplicate number [Binary Search, Two Pointers]
• Reverse string
• Reverse vowels of a string
• Intersection of two array [Hash, Binary Search]
• Intersection of two arrays I [Hash, Binary Search]
• Sort transformed array
• Circular array loop
• Permutation in string
• Valid triangle number
• Swap adjacent in LR string
• Most profit assigning work
• Unique letter string
• Backspace string compare
• Middle of the linked list
• Fruit into baskets
• Binary subarrays with sum
• Squares of a sorted array
• Max consecutive ones III
• Moving stones until consecutive
• Moving stones until consecutive II
• Intersection of three sorted arrays
• Two sum BST [Stack]
• Count number of nice subarray [Subarrays with K Different Integers]
• All elements in two binary search tree [Stack]