Problems

3,898+ problems · 938 Easy · 2039 Medium · 921 Hard

Title	Solution	Practice	Difficulty	Companies	Topics
3101. Count Alternating Subarrays	Solution	Solve	Medium	Capital One+1	Array Math
3102. Minimize Manhattan Distances	Solution	Solve	Hard	Amazon	Array Geometry+3
3103. Find Trending Hashtags II	Solution	Solve	Hard	-	Database
3104. Find Longest Self-Contained Substring	Solution	Solve	Hard	Amazon	Binary Search Hash Table+2
3105. Longest Strictly Increasing or Strictly Decreasing Subarray	Solution	Solve	Easy	Amazon+6	Array
3106. Lexicographically Smallest String After Operations With Constraint	Solution	Solve	Medium	ServiceNow	Greedy String
3107. Minimum Operations to Make Median of Array Equal to K	Solution	Solve	Medium	IBM	Array Greedy+1
3108. Minimum Cost Walk in Weighted Graph	Solution	Solve	Hard	Amazon+4	Array Bit Manipulation+2
3109. Find the Index of Permutation	Solution	Solve	Medium	-	Array Binary Indexed Tree+5
3110. Score of a String	Solution	Solve	Easy	Amazon+4	String
3111. Minimum Rectangles to Cover Points	Solution	Solve	Medium	Microsoft	Array Greedy+1
3112. Minimum Time to Visit Disappearing Nodes	Solution	Solve	Medium	-	Array Graph+2
3113. Find the Number of Subarrays Where Boundary Elements Are Maximum	Solution	Solve	Hard	Amazon+1	Array Binary Search+2
3114. Latest Time You Can Obtain After Replacing Characters	Solution	Solve	Easy	Google	Enumeration String
3115. Maximum Prime Difference	Solution	Solve	Medium	Unstop	Array Math+1
3116. Kth Smallest Amount With Single Denomination Combination	Solution	Solve	Hard	-	Array Binary Search+4
3117. Minimum Sum of Values by Dividing Array	Solution	Solve	Hard	Google	Array Binary Search+4
3118. Friday Purchase III	Solution	Solve	Medium	-	Database
3119. Maximum Number of Potholes That Can Be Fixed	Solution	Solve	Medium	Geico+1	Greedy Sorting+1
3120. Count the Number of Special Characters I	Solution	Solve	Easy	Amazon+1	Hash Table String
3121. Count the Number of Special Characters II	Solution	Solve	Medium	Amazon+2	Hash Table String
3122. Minimum Number of Operations to Satisfy Conditions	Solution	Solve	Medium	Turing	Array Dynamic Programming+1
3123. Find Edges in Shortest Paths	Solution	Solve	Hard	DoorDash+1	Breadth-First Search Depth-First Search+3
3124. Find Longest Calls	Solution	Solve	Medium	IBM	Database
3125. Maximum Number That Makes Result of Bitwise AND Zero	Solution	Solve	Medium	Salesforce	Greedy Sorting+1
3126. Server Utilization Time	Solution	Solve	Medium	-	Database
3127. Make a Square with the Same Color	Solution	Solve	Easy	-	Array Enumeration+1
3128. Right Triangles	Solution	Solve	Medium	Google+1	Array Combinatorics+3
3129. Find All Possible Stable Binary Arrays I	Solution	Solve	Medium	-	Dynamic Programming Prefix Sum
3130. Find All Possible Stable Binary Arrays II	Solution	Solve	Hard	IBM	Dynamic Programming Prefix Sum
3131. Find the Integer Added to Array I	Solution	Solve	Easy	Bloomberg+1	Array
3132. Find the Integer Added to Array II	Solution	Solve	Medium	Meta+1	Array Enumeration+2
3133. Minimum Array End	Solution	Solve	Medium	Amazon+3	Bit Manipulation
3134. Find the Median of the Uniqueness Array	Solution	Solve	Hard	Amazon+1	Array Binary Search+2
3135. Equalize Strings by Adding or Removing Characters at Ends	Solution	Solve	Medium	Salesforce	Binary Search Dynamic Programming+3
3136. Valid Word	Solution	Solve	Easy	Amazon+7	String
3137. Minimum Number of Operations to Make Word K-Periodic	Solution	Solve	Medium	Google+1	Counting Hash Table+1
3138. Minimum Length of Anagram Concatenation	Solution	Solve	Medium	Turing+1	Counting Hash Table+1
3139. Minimum Cost to Equalize Array	Solution	Solve	Hard	Amazon+2	Array Enumeration+1
3140. Consecutive Available Seats II	Solution	Solve	Medium	-	Database
3141. Maximum Hamming Distances	Solution	Solve	Hard	-	Array Bit Manipulation+1
3142. Check if Grid Satisfies Conditions	Solution	Solve	Easy	-	Array Matrix
3143. Maximum Points Inside the Square	Solution	Solve	Medium	Hashedin	Array Binary Search+3
3144. Minimum Substring Partition of Equal Character Frequency	Solution	Solve	Medium	Amazon+3	Counting Dynamic Programming+2
3145. Find Products of Elements of Big Array	Solution	Solve	Hard	IBM	Array Binary Search+1
3146. Permutation Difference between Two Strings	Solution	Solve	Easy	Accenture	Hash Table String
3147. Taking Maximum Energy From the Mystic Dungeon	Solution	Solve	Medium	Amazon+4	Array Prefix Sum
3148. Maximum Difference Score in a Grid	Solution	Solve	Medium	Intuit	Array Dynamic Programming+1
3149. Find the Minimum Cost Array Permutation	Solution	Solve	Hard	Google	Array Bit Manipulation+2
3150. Invalid Tweets II	Solution	Solve	Easy	-	Database