Skip to content

For employers Sign in

Make and follow sheets.Sign in

LeetCode 75Official

LeetCode's official study plan. 75 problems across 20+ topics from basics to advanced. Great for structured preparation.

By FleetCode75 problems22 Easy53 Medium0 Hard2 followersUpdated 23 Mar 2026

Start: Merge Strings Alternately

75problems

22Easy

53Medium

0Hard

Signed in, the sheet shows which of these you have solved.

Showing 22 of 75 problems · Easy · Clear

TitleSolutionAcceptDifficultyTopics

1768. Merge Strings AlternatelyVideo

Solution82.1%Easy

String, Two Pointers· 11 companies

1071. Greatest Common Divisor of StringsVideo

Solution54.1%Easy

Math, String· 7 companies

1431. Kids With the Greatest Number of CandiesVideo

Solution87.8%Easy

Array· 6 companies

605. Can Place FlowersVideo

Solution28.8%Easy

Array, Greedy· 16 companies

345. Reverse Vowels of a StringVideo

Solution62.7%Easy

String, Two Pointers· 13 companies

283. Move ZeroesVideo

Solution64.3%Easy

Array, Two Pointers· 46 companies

392. Is SubsequenceVideo

Solution49.5%Easy

Dynamic Programming, String +1· 16 companies

643. Maximum Average Subarray IVideo

Solution49.2%Easy

Array, Sliding Window· 12 companies

1732. Find the Highest AltitudeVideo

Solution84.7%Easy

Array, Prefix Sum· 7 companies

724. Find Pivot IndexVideo

Solution64.2%Easy

Array, Prefix Sum· 18 companies

2215. Find the Difference of Two ArraysVideo

Solution81.4%Easy

Array, Hash Table· 7 companies

1207. Unique Number of OccurrencesVideo

Solution78.7%Easy

Array, Hash Table· 5 companies

933. Number of Recent CallsVideo

Solution78.9%Easy

Data Stream, Design +1· 9 companies

206. Reverse Linked ListVideo

Solution81.0%Easy

Linked List, Recursion· 34 companies

104. Maximum Depth of Binary TreeVideo

Solution78.6%Easy

Binary Tree, Breadth-First Search +2· 17 companies

872. Leaf-Similar TreesVideo

Solution70.0%Easy

Binary Tree, Depth-First Search +1· 5 companies

700. Search in a Binary Search TreeVideo

Solution83.1%Easy

Binary Search Tree, Binary Tree +1· 5 companies

374. Guess Number Higher or LowerVideo

Solution58.5%Easy

Binary Search, Interactive· 6 companies

1137. N-th Tribonacci NumberVideo

Solution63.2%Easy

Dynamic Programming, Math +1· 7 companies

746. Min Cost Climbing StairsVideo

Solution68.7%Easy

Array, Dynamic Programming· 7 companies

338. Counting BitsVideo

Solution80.5%Easy

Bit Manipulation, Dynamic Programming· 9 companies

136. Single NumberVideo

Solution78.1%Easy

Array, Bit Manipulation· 15 companies

Comments