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2 Month DSA Practice Sheet

Comprehensive 60-day roadmap

22 Easy52 Medium15 Hard
0 of 89 solved0%

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Showing 89 of 89 problems

01Two Sumeasy
02Longest Substring Without Repeating Charactersmedium
03Longest Palindromic Substringmedium
04Regular Expression Matchinghard
05Roman to Integereasy
063Summedium
07Letter Combinations of a Phone Numbermedium
08Valid Parentheseseasy
09Merge Two Sorted Listseasy
10Generate Parenthesesmedium
11Search in Rotated Sorted Arraymedium
12Count and Saymedium
13Trapping Rain Waterhard
14Wildcard Matchinghard
15Maximum Subarrayeasy
16Rotate Imagemedium
17Merge Intervalsmedium
18Unique Pathsmedium
19Plus One Linked Listmedium
20Climbing Stairseasy
21Set Matrix Zeroesmedium
22Sliding Window Maximumhard
23Word Searchmedium
24Largest Rectangle in Histogramhard
25Merge Sorted Arrayeasy
26Decode Waysmedium
27Binary Tree Inorder Traversaleasy
28Symmetric Treeeasy
29Balanced Binary Treeeasy
30Binary Tree Zigzag Level Order Traversalmedium
31Maximum Depth of Binary Treeeasy
32Construct Binary Tree from Preorder and Inorder Traversalmedium
33Populating Next Right Pointers in Each Nodemedium
34Pascal's Triangleeasy
35Best Time to Buy and Sell Stock IIeasy
36Binary Tree Maximum Path Sumhard
37Word Ladderhard
38Longest Consecutive Sequencemedium
39Surrounded Regionsmedium
40Palindrome Partitioningmedium
41Copy List with Random Pointermedium
42Word Breakmedium
43Middle of the Linked Listeasy
44Linked List Cyclemedium
45LRU Cachehard
46Maximum Product Subarraymedium
47Min Stackeasy
48Intersection of Two Linked Listseasy
49Excel Sheet Column Numbereasy
50Factorial Trailing Zeroeseasy
51Number of Islandsmedium
52Count Primesmedium
53Reverse Linked List IImedium
54Kth Smallest Element in a BSTmedium
55Palindrome Linked Listeasy
56Lowest Common Ancestor of a Binary Treemedium
57Find Missing and Repeatingmedium
58Inorder Successor in BSTmedium
59Find Median from Data Streamhard
60Serialize and Deserialize BSTmedium
61Longest Increasing Subsequencemedium
62Coin Changemedium
63Minimum Path Summedium
64Super Egg Drophard
65Best Time to Buy and Sell Stock IIIhard
66Minimum Platformsmedium
67Course Schedulemedium
68Minimum Insertion Steps to Make a String Palindromehard
69Compare Version Numbersmedium
70BFS of Graphmedium
71DFS of Graphmedium
72Same Treeeasy
73Meeting Rooms IImedium
74Stepping Numbersmedium
75Palindrome Partitioning IIhard
76Maximum Sum Increasing Subsequencemedium
77Merge k Sorted Listshard
78Lowest Common Ancestor of a BSTeasy
79Flatten Binary Tree to Linked Listmedium
80Binary Tree Left Side Viewmedium
81Top View of Binary Treemedium
824Summedium
83Rotting Orangesmedium
84Next Greater Element Imedium
85Remove Duplicates from Sorted List IImedium
86Median of Two Sorted Arrayshard
87Count Inversionsmedium
88Maximum Subarray Sumeasy
89Distinct Numbers in Windowmedium