GFG hard problems 0001-0100

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Problem Name	Difficulty	Solution Link
Merge Without Extra Space	Hard	View Solutions
Reverse a Linked List in groups of given size	Hard	View Solutions
Edit Distance	Hard	View Solutions
Maximum Path Sum between 2 Special Nodes	Hard	View Solutions
Maximum Rectangular Area in a Histogram	Hard	View Solutions
Minimum sum partition	Hard	View Solutions
LRU Cache	Hard	View Solutions
Palindromic Partitioning	Hard	View Solutions
Smallest window in a string containing all the characters of another string	Hard	View Solutions
Binary Tree to DLL	Hard	View Solutions
Find median in a stream	Hard	View Solutions
Boolean Parenthesization	Hard	View Solutions
Median of 2 Sorted Arrays of Different Sizes	Hard	View Solutions
Matrix Chain Multiplication	Hard	View Solutions
Longest Prefix Suffix	Hard	View Solutions
The Painter's Partition Problem-II	Hard	View Solutions
Max rectangle	Hard	View Solutions
Max Circular Subarray Sum	Hard	View Solutions
Alien Dictionary	Hard	View Solutions
Median in a row-wise sorted Matrix	Hard	View Solutions
Solve the Sudoku	Hard	View Solutions
Longest valid Parentheses	Hard	View Solutions
Form a palindrome	Hard	View Solutions
Minimum Cost Path	Hard	View Solutions
Nodes at given distance in binary tree	Hard	View Solutions
Subtraction in Linked List	Hard	View Solutions
N-Queen Problem	Hard	View Solutions
Clone a linked list with next and random pointer	Hard	View Solutions
Distinct occurrences	Hard	View Solutions
Number of distinct subsequences	Hard	View Solutions
Next Smallest Palindrome	Hard	View Solutions
String Permutations	Hard	View Solutions
Wildcard string matching	Hard	View Solutions
Reorder List	Hard	View Solutions
Merge two BST 's	Hard	View Solutions
Aggressive Cows	Hard	View Solutions
Circle of strings	Hard	View Solutions
Burning Tree	Hard	View Solutions
Wildcard Pattern Matching	Hard	View Solutions
Nth Natural Number	Hard	View Solutions
Count Pairs in an Array	Hard	View Solutions
Articulation Point - I	Hard	View Solutions
Count Smaller elements	Hard	View Solutions
Minimize Max Distance to Gas Station	Hard	View Solutions
Generalised Fibonacci numbers	Hard	View Solutions
Split Array Largest Sum	Hard	View Solutions
Better String	Hard	View Solutions
Fixing Two nodes of a BST	Hard	View Solutions
Strictly Increasing Array	Hard	View Solutions
Longest repeating and non-overlapping substring	Hard	View Solutions
Bit Difference	Hard	View Solutions
Closest Palindrome	Hard	View Solutions
Minimum Points To Reach Destination	Hard	View Solutions
AVL Tree Insertion	Hard	View Solutions
Word Wrap	Hard	View Solutions
Merge Sort on Doubly Linked List	Hard	View Solutions
Word Ladder I	Hard	View Solutions
Phone directory	Hard	View Solutions
Smallest Positive Integer that can not be represented as Sum	Hard	View Solutions
Maximum of minimum for every window size	Hard	View Solutions
Partition array to K subsets	Hard	View Solutions
Making A Large Island	Hard	View Solutions
Minimum characters to be added at front to make string palindrome	Hard	View Solutions
AVL Tree Deletion	Hard	View Solutions
Candy	Hard	View Solutions
Largest rectangular sub-matrix whose sum is 0	Hard	View Solutions
Account Merge	Hard	View Solutions
Next Happy Number	Hard	View Solutions
Maximum Profit	Hard	View Solutions
Find all Critical Connections in the Graph	Hard	View Solutions
Brackets in Matrix Chain Multiplication	Hard	View Solutions
Return two prime numbers	Hard	View Solutions
Sum-string	Hard	View Solutions
Word Break - Part 2	Hard	View Solutions
Maximum XOR subarray	Hard	View Solutions
Box Stacking	Hard	View Solutions
Maximum subset XOR	Hard	View Solutions
Find Last Digit Of a^b for Large Numbers	Hard	View Solutions
Distribute candies in a binary tree	Hard	View Solutions
Geek collects the balls	Hard	View Solutions
Special Digits	Hard	View Solutions
Word Ladder II	Hard	View Solutions
Smallest range in K lists	Hard	View Solutions
Possible Paths in a Tree	Hard	View Solutions
Vertex Cover	Hard	View Solutions
Geekina Hate 1s	Hard	View Solutions
Find the String	Hard	View Solutions
Largest Sum Cycle	Hard	View Solutions
Find number of closed islands	Hard	View Solutions
Redundant Parenthesis	Hard	View Solutions
Walls Coloring II	Hard	View Solutions
Strongly connected component (Tarjans's Algo)	Hard	View Solutions
Distinct palindromic substrings	Hard	View Solutions
Count Binary Strings With No Consecutive 1s	Hard	View Solutions
Min Time	Hard	View Solutions
Print all LCS sequences	Hard	View Solutions
Sorted Link List to BST	Hard	View Solutions
Cake Distribution Problem	Hard	View Solutions
Maximum Number of Toys	Hard	View Solutions
Expression Add Operators	Hard	View Solutions

Now, you can see the list of problems in a table format. You can click on the problem link to view the problem on the GFG website. You can also click on the solution link to view the solution of the problem.