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
2943. Maximize Area of Square Hole in Grid	Solve	Medium	Swiggy	Array Sorting
2944. Minimum Number of Coins for Fruits	Solve	Medium	-	Array Dynamic Programming+3
2947. Count Beautiful Substrings I	Solve	Medium	Amazon	Enumeration Hash Table+4
2948. Make Lexicographically Smallest Array by Swapping Elements	Solve	Medium	Atlassian	Array Sorting+1
2950. Number of Divisible Substrings	Solve	Medium	Amdocs	Counting Hash Table+2
2952. Minimum Number of Coins to be Added	Solve	Medium	Flipkart	Array Greedy+1
2955. Number of Same-End Substrings	Solve	Medium	Sprinklr	Array Counting+3
2957. Remove Adjacent Almost-Equal Characters	Solve	Medium	Salesforce	Dynamic Programming Greedy+1
2958. Length of Longest Subarray With at Most K Frequency	Solve	Medium	MakeMyTrip	Array Hash Table+1
2961. Double Modular Exponentiation	Solve	Medium	Barclays	Array Math+1
2962. Count Subarrays Where Max Element Appears at Least K Times	Solve	Medium	Adobe	Array Sliding Window
2964. Number of Divisible Triplet Sums	Solve	Medium	IBM	Array Hash Table
2966. Divide Array Into Arrays With Max Difference	Solve	Medium	Google	Array Greedy+1
2967. Minimum Cost to Make Array Equalindromic	Solve	Medium	Google	Array Binary Search+3
2971. Find Polygon With the Largest Perimeter	Solve	Medium	Airtel+1	Array Greedy+2
2975. Maximum Square Area by Removing Fences From a Field	Solve	Medium	-	Array Enumeration+1
2976. Minimum Cost to Convert String I	Solve	Medium	Atlassian	Array Graph+2
2978. Symmetric Coordinates	Solve	Medium	-	Database
2979. Most Expensive Item That Can Not Be Bought	Solve	Medium	Amazon	Dynamic Programming Math+1
2981. Find Longest Special Substring That Occurs Thrice I	Solve	Medium	Google	Binary Search Counting+3
2982. Find Longest Special Substring That Occurs Thrice II	Solve	Medium	Google	Binary Search Counting+3
2984. Find Peak Calling Hours for Each City	Solve	Medium	-	Database
2986. Find Third Transaction	Solve	Medium	-	Database
2988. Manager of the Largest Department	Solve	Medium	-	Database
2989. Class Performance	Solve	Medium	-	Database
2992. Number of Self-Divisible Permutations	Solve	Medium	-	Array Backtracking+3
2993. Friday Purchases I	Solve	Medium	-	Database
2997. Minimum Number of Operations to Make Array XOR Equal to K	Solve	Medium	-	Array Bit Manipulation
2998. Minimum Number of Operations to Make X and Y Equal	Solve	Medium	-	Breadth-First Search Dynamic Programming+1
3001. Minimum Moves to Capture The Queen	Solve	Medium	-	Array Enumeration
3002. Maximum Size of a Set After Removals	Solve	Medium	-	Array Greedy+1
3004. Maximum Subtree of the Same Color	Solve	Medium	-	Array Depth-First Search+2
3006. Find Beautiful Indices in the Given Array I	Solve	Medium	-	Binary Search Hash Function+4
3007. Maximum Number That Sum of the Prices Is Less Than or Equal to K	Solve	Medium	-	Binary Search Bit Manipulation+1
3011. Find if Array Can Be Sorted	Solve	Medium	-	Array Bit Manipulation+1
3012. Minimize Length of Array Using Operations	Solve	Medium	-	Array Greedy+2
3015. Count the Number of Houses at a Certain Distance I	Solve	Medium	-	Breadth-First Search Graph+1
3016. Minimum Number of Pushes to Type Word II	Solve	Medium	-	Counting Greedy+3
3020. Find the Maximum Number of Elements in Subset	Solve	Medium	-	Array Enumeration+1
3021. Alice and Bob Playing Flower Game	Solve	Medium	-	Math
3023. Find Pattern in Infinite Stream I	Solve	Medium	-	Array Hash Function+3
3025. Find the Number of Ways to Place People I	Solve	Medium	-	Array Enumeration+3
3026. Maximum Good Subarray Sum	Solve	Medium	-	Array Hash Table+1
3029. Minimum Time to Revert Word to Initial State I	Solve	Medium	-	Hash Function Rolling Hash+2
3030. Find the Grid of Region Average	Solve	Medium	-	Array Matrix
3034. Number of Subarrays That Match a Pattern I	Solve	Medium	-	Array Hash Function+2
3035. Maximum Palindromes After Operations	Solve	Medium	-	Array Counting+4
3039. Apply Operations to Make String Empty	Solve	Medium	-	Array Counting+2
3040. Maximum Number of Operations With the Same Score II	Solve	Medium	-	Array Dynamic Programming+1
3043. Find the Length of the Longest Common Prefix	Solve	Medium	-	Array Hash Table+2