Dashboard Questions Topics Companies Sheets

Data Structures & Algorithms

Practice 3,374+ coding problems from top companies. Master DSA concepts and ace your interviews.

3,374

Problems

840

Easy

1762

Medium

772

Hard

Difficulty

All3374 Easy840 Medium1762 Hard772

Title	Solve	Difficulty	Companies	Topics
1051. Height Checker	Solve	Easy	Apple+2	Array Counting Sort+1
1056. Confusing Number	Solve	Easy	Google	Math
1064. Fixed Point	Solve	Easy	Qualtrics	Array Binary Search
1065. Index Pairs of a String	Solve	Easy	Amazon	Array Sorting+2
1068. Product Sales Analysis I	Solve	Easy	Adobe+2	Database
1069. Product Sales Analysis II	Solve	Easy	Amazon	Database
1071. Greatest Common Divisor of Strings	Solve	Easy	Atlassian+1	Math String
1075. Project Employees I	Solve	Easy	Amazon+1	Database
1076. Project Employees II	Solve	Easy	Facebook	Database
1078. Occurrences After Bigram	Solve	Easy	Google	String
1082. Sales Analysis I	Solve	Easy	Amazon	Database
1083. Sales Analysis II	Solve	Easy	Amazon	Database
1084. Sales Analysis III	Solve	Easy	Amazon	Database
1085. Sum of Digits in the Minimum Number	Solve	Easy	Amazon	Array Math
1086. High Five	Solve	Easy	Goldman Sachs	Array Hash Table+2
1089. Duplicate Zeros	Solve	Easy	Amazon+1	Array Two Pointers
1099. Two Sum Less Than K	Solve	Easy	Amazon+3	Array Binary Search+2
1103. Distribute Candies to People	Solve	Easy	PayTM	Math Simulation
1108. Defanging an IP Address	Solve	Easy	Amazon+1	String
1113. Reported Posts	Solve	Easy	Facebook	Database
1114. Print in Order	Solve	Easy	Google	Concurrency
1118. Number of Days in a Month	Solve	Easy	Amazon	Math
1119. Remove Vowels from a String	Solve	Easy	Amazon	String
1122. Relative Sort Array	Solve	Easy	Google	Array Counting Sort+2
1128. Number of Equivalent Domino Pairs	Solve	Easy	Adobe+1	Array Counting+1
1133. Largest Unique Number	Solve	Easy	Amazon	Array Hash Table+1
1134. Armstrong Number	Solve	Easy	Amazon	Math
1137. N-th Tribonacci Number	Solve	Easy	Adobe+3	Dynamic Programming Math+1
1141. User Activity for the Past 30 Days I	Solve	Easy	Bloomberg+2	Database
1142. User Activity for the Past 30 Days II	Solve	Easy	Facebook+1	Database
1148. Article Views I	Solve	Easy	Adobe+7	Database
1150. Check If a Number Is Majority Element in a Sorted Array	Solve	Easy	Facebook+1	Array Binary Search
1154. Day of the Year	Solve	Easy	ZScaler	Math String
1160. Find Words That Can Be Formed by Characters	Solve	Easy	Amazon+3	Array Counting+2
1165. Single-Row Keyboard	Solve	Easy	Google	Hash Table String
1173. Immediate Food Delivery I	Solve	Easy	DoorDash	Database
1175. Prime Arrangements	Solve	Easy	Amazon	Math
1176. Diet Plan Performance	Solve	Easy	Amazon	Array Sliding Window
1179. Reformat Department Table	Solve	Easy	Amazon	Database
1180. Count Substrings with Only One Distinct Letter	Solve	Easy	Virtu Financial	Math String
1184. Distance Between Bus Stops	Solve	Easy	Google	Array
1185. Day of the Week	Solve	Easy	Apple+1	Math
1189. Maximum Number of Balloons	Solve	Easy	Adobe	Counting Hash Table+1
1196. How Many Apples Can You Put into the Basket	Solve	Easy	Virtu Financial	Array Greedy+1
1200. Minimum Absolute Difference	Solve	Easy	Google+2	Array Sorting
1207. Unique Number of Occurrences	Solve	Easy	Adobe+5	Array Hash Table
1211. Queries Quality and Percentage	Solve	Easy	Amazon+1	Database
1213. Intersection of Three Sorted Arrays	Solve	Easy	Facebook	Array Binary Search+2
1217. Minimum Cost to Move Chips to The Same Position	Solve	Easy	Adobe+1	Array Greedy+1
1221. Split a String in Balanced Strings	Solve	Easy	Adobe+3	Counting Greedy+1