Dashboard Questions Topics Companies Sheets

Hash Table

Topic

645 coding problems covering Hash Table concepts. Master this topic and improve your problem-solving skills.

645

Problems

158

Easy

383

Medium

104

Hard

Difficulty

All645 Easy158 Medium383 Hard104

Title	Solve	Difficulty	Companies	Topics
2910. Minimum Number of Groups to Create a Valid Assignment	Solve	Medium	BNY Melon	Array Greedy+1
2913. Subarrays Distinct Element Sum of Squares I	Solve	Easy	-	Array Hash Table
2932. Maximum Strong Pair XOR I	Solve	Easy	Amazon+1	Array Bit Manipulation+3
2933. High-Access Employees	Solve	Medium	Atlassian	Array Hash Table+2
2935. Maximum Strong Pair XOR II	Solve	Hard	ZScaler	Array Bit Manipulation+3
2947. Count Beautiful Substrings I	Solve	Medium	Amazon	Enumeration Hash Table+4
2949. Count Beautiful Substrings II	Solve	Hard	Amazon	Hash Table Math+3
2950. Number of Divisible Substrings	Solve	Medium	Amdocs	Counting Hash Table+2
2953. Count Complete Substrings	Solve	Hard	Meesho	Hash Table Sliding Window+1
2955. Number of Same-End Substrings	Solve	Medium	Sprinklr	Array Counting+3
2956. Find Common Elements Between Two Arrays	Solve	Easy	Facebook	Array Hash Table
2958. Length of Longest Subarray With at Most K Frequency	Solve	Medium	MakeMyTrip	Array Hash Table+1
2963. Count the Number of Good Partitions	Solve	Hard	Google	Array Combinatorics+2
2964. Number of Divisible Triplet Sums	Solve	Medium	IBM	Array Hash Table
2965. Find Missing and Repeated Values	Solve	Easy	-	Array Hash Table+2
2975. Maximum Square Area by Removing Fences From a Field	Solve	Medium	-	Array Enumeration+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
2983. Palindrome Rearrangement Queries	Solve	Hard	-	Hash Table Prefix Sum+1
2996. Smallest Missing Integer Greater Than Sequential Prefix Sum	Solve	Easy	-	Array Hash Table+1
3002. Maximum Size of a Set After Removals	Solve	Medium	-	Array Greedy+1
3005. Count Elements With Maximum Frequency	Solve	Easy	-	Array Counting+1
3013. Divide an Array Into Subarrays With Minimum Cost II	Solve	Hard	-	Array Hash Table+2
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
3026. Maximum Good Subarray Sum	Solve	Medium	-	Array Hash Table+1
3032. Count Numbers With Unique Digits II	Solve	Easy	-	Dynamic Programming Hash Table+1
3035. Maximum Palindromes After Operations	Solve	Medium	-	Array Counting+4
3039. Apply Operations to Make String Empty	Solve	Medium	-	Array Counting+2
3043. Find the Length of the Longest Common Prefix	Solve	Medium	-	Array Hash Table+2
3044. Most Frequent Prime	Solve	Medium	-	Array Counting+5
3046. Split the Array	Solve	Easy	-	Array Counting+1
3063. Linked List Frequency	Solve	Easy	-	Counting Hash Table+1
3071. Minimum Operations to Write the Letter Y on a Grid	Solve	Medium	-	Array Counting+2
3076. Shortest Uncommon Substring in an Array	Solve	Medium	-	Array Hash Table+2
3078. Match Alphanumerical Pattern in Matrix I	Solve	Medium	-	Array Hash Table+2
3080. Mark Elements on Array by Performing Queries	Solve	Medium	-	Array Hash Table+3
3081. Replace Question Marks in String to Minimize Its Value	Solve	Medium	-	Counting Greedy+4
3083. Existence of a Substring in a String and Its Reverse	Solve	Easy	-	Hash Table String
3085. Minimum Deletions to Make String K-Special	Solve	Medium	-	Counting Greedy+3
3090. Maximum Length Substring With Two Occurrences	Solve	Easy	-	Hash Table Sliding Window+1
3092. Most Frequent IDs	Solve	Medium	-	Array Hash Table+2
3104. Find Longest Self-Contained Substring	Solve	Hard	-	Binary Search Hash Table+2
3120. Count the Number of Special Characters I	Solve	Easy	-	Hash Table String
3121. Count the Number of Special Characters II	Solve	Medium	-	Hash Table String
3128. Right Triangles	Solve	Medium	-	Array Combinatorics+3
3134. Find the Median of the Uniqueness Array	Solve	Hard	-	Array Binary Search+2
3137. Minimum Number of Operations to Make Word K-Periodic	Solve	Medium	-	Counting Hash Table+1
3138. Minimum Length of Anagram Concatenation	Solve	Medium	-	Counting Hash Table+1
3143. Maximum Points Inside the Square	Solve	Medium	-	Array Binary Search+3