Dashboard Questions Topics Companies Sheets

Two Pointers

Topic

209 coding problems covering Two Pointers concepts. Master this topic and improve your problem-solving skills.

209

Problems

Easy

125

Medium

Hard

Difficulty

All209 Easy59 Medium125 Hard25

Title	Solve	Difficulty	Companies	Topics
443. String Compression	Solve	Medium	Amazon+8	String Two Pointers
455. Assign Cookies	Solve	Easy	Apple	Array Greedy+2
457. Circular Array Loop	Solve	Medium	Goldman Sachs	Array Hash Table+1
475. Heaters	Solve	Medium	Amazon+1	Array Binary Search+2
481. Magical String	Solve	Medium	Google	String Two Pointers
522. Longest Uncommon Subsequence II	Solve	Medium	Apple	Array Hash Table+3
524. Longest Word in Dictionary through Deleting	Solve	Medium	Google	Array Sorting+2
532. K-diff Pairs in an Array	Solve	Medium	Adobe+7	Array Binary Search+3
541. Reverse String II	Solve	Easy	Adobe	String Two Pointers
556. Next Greater Element III	Solve	Medium	Adobe+10	Math String+1
557. Reverse Words in a String III	Solve	Easy	Accolite+27	String Two Pointers
567. Permutation in String	Solve	Medium	Amazon+7	Hash Table Sliding Window+2
581. Shortest Unsorted Continuous Subarray	Solve	Medium	Amazon+1	Array Greedy+4
611. Valid Triangle Number	Solve	Medium	Amazon+2	Array Binary Search+3
633. Sum of Square Numbers	Solve	Medium	Amazon+1	Binary Search Math+1
647. Palindromic Substrings	Solve	Medium	Expedia+2	Dynamic Programming String+1
653. Two Sum IV - Input is a BST	Solve	Easy	Amazon+1	Binary Search Tree Binary Tree+5
658. Find K Closest Elements	Solve	Medium	Amazon+6	Array Binary Search+4
680. Valid Palindrome II	Solve	Easy	Amazon+6	Greedy String+1
696. Count Binary Substrings	Solve	Easy	Adobe+8	String Two Pointers
719. Find K-th Smallest Pair Distance	Solve	Hard	Facebook	Array Binary Search+2
723. Candy Crush	Solve	Medium	Bloomberg+3	Array Matrix+2
763. Partition Labels	Solve	Medium	Amazon+1	Greedy Hash Table+2
777. Swap Adjacent in LR String	Solve	Medium	Adobe+2	String Two Pointers
786. K-th Smallest Prime Fraction	Solve	Medium	Pony.ai	Array Binary Search+3
795. Number of Subarrays with Bounded Maximum	Solve	Medium	Adobe+2	Array Two Pointers
809. Expressive Words	Solve	Medium	Cisco+2	Array String+1
821. Shortest Distance to a Character	Solve	Easy	Apple+1	Array String+1
825. Friends Of Appropriate Ages	Solve	Medium	Facebook	Array Binary Search+2
826. Most Profit Assigning Work	Solve	Medium	Amazon+2	Array Binary Search+3
832. Flipping an Image	Solve	Easy	Google	Array Bit Manipulation+3
838. Push Dominoes	Solve	Medium	Bloomberg	Dynamic Programming String+1
844. Backspace String Compare	Solve	Easy	Amazon+12	Simulation Stack+2
845. Longest Mountain in Array	Solve	Medium	Bloomberg+3	Array Dynamic Programming+2
870. Advantage Shuffle	Solve	Medium	Facebook	Array Greedy+2
876. Middle of the Linked List	Solve	Easy	Adobe+6	Linked List Two Pointers
881. Boats to Save People	Solve	Medium	Amazon+6	Array Greedy+2
905. Sort Array By Parity	Solve	Easy	Amazon+11	Array Sorting+1
917. Reverse Only Letters	Solve	Easy	Amazon	String Two Pointers
922. Sort Array By Parity II	Solve	Easy	Microsoft	Array Sorting+1
923. 3Sum With Multiplicity	Solve	Medium	Adobe+1	Array Counting+3
925. Long Pressed Name	Solve	Easy	Google	String Two Pointers
942. DI String Match	Solve	Easy	Microsoft	Array Greedy+2
948. Bag of Tokens	Solve	Medium	Adobe+3	Array Greedy+2
969. Pancake Sorting	Solve	Medium	Amazon+1	Array Greedy+2
977. Squares of a Sorted Array	Solve	Easy	Amazon+4	Array Sorting+1
986. Interval List Intersections	Solve	Medium	Amazon+7	Array Two Pointers
1023. Camelcase Matching	Solve	Medium	Amazon+1	Array String+3
1040. Moving Stones Until Consecutive II	Solve	Medium	Facebook	Array Math+2
1048. Longest String Chain	Solve	Medium	Facebook+4	Array Dynamic Programming+4