Warm Up Grab a coffee, click on one of them, and start your day with solving one. If they are not challenging for you, skip them. # Title Provider Solution Difficulty 0001 Number Line Jumps HackerRank Java 🌀 0002 Drawing Book HackerRank Java 🌀 0003 Breaking The Records HackerRank Kotlin 🌀 0004 Cats And Mouse HackerRank Kotlin 🌀 0005 The Hurdle Race HackerRank Java 🌀 0006 Find The Point HackerRank Kotlin 🌀 0007 Diagonal Difference HackerRank Kotlin 🌀 0008 Migratory Birds HackerRank Python 🌀 0009 Subarray Division HackerRank Java 🌀 0010 Climbing The Leaderboard HackerRank Java -- 0011 Angry Professor HackerRank Java 🌀 0012 Divisible Sum Pairs HackerRank Kotlin 🌀 0013 Designer PDF Viewer HackerRank Kotlin 🌀 0014 Save The Prisoner HackerRank Kotlin 🌀 0015 Two Sum LeetCode Java 🌀 0016 Add Two Numbers LeetCode Java 🌀 0017 Longest Substring Without Repeating Characters LeetCode Kotlin 🌀 0018 Valid Parentheses LeetCode Kotlin 🌀 0019 Palindrome Number LeetCode Kotlin 🌀 0020 Longest Common Prefix LeetCode Kotlin 🌀 0021 Merge Sorted Array LeetCode Python 🌀 0022 First Reverse CoderByte Kotlin 🌀 0023 First Factorial CoderByte Kotlin 🌀 0024 Maximum Subarray LeetCode Kotlin 🌀 0025 Time Needed to Buy Tickets LeetCode Kotlin 🌀 0026 Best Time to Buy and Sell Stock LeetCode Kotlin 🌀 0027 Remove Element LeetCode Kotlin 🌀 0028 Remove Duplicates from Sorted Array LeetCode Kotlin 🌀 0029 Merge Two Sorted Lists LeetCode Kotlin 🌀 0030 Third Maximum Number LeetCode Kotlin 🌀 0031 Climbing Stairs LeetCode Kotlin 🌀 0032 Halloween Sale HackerRank Kotlin 🌀 0033 Implement StrStr LeetCode Kotlin 🌀 0034 Plus One LeetCode Kotlin 🌀 0035 Word Pattern LeetCode Kotlin 🌀 0036 Single Number LeetCode Kotlin 🌀 0037 Ugly Number LeetCode Kotlin 🌀 0038 Product of Array Except Self LeetCode Kotlin 🎯 0039 Extra Long Factorials HackerRank Kotlin 🌀 0040 Largest Substring Between Two Equal Characters LeetCode Kotlin 🌀 0041 Reverse Integer LeetCode Kotlin 🎯 0042 Median of Two Sorted Arrays LeetCode Kotlin -- 0043 Reformat the String LeetCode Kotlin 🌀 0044 Divisor Game LeetCode Kotlin 🌀 0045 Pow LeetCode Kotlin -- 0046 Count Odd Numbers in an Interval Range LeetCode Kotlin 🌀 0047 Equalize the Array HackerRank Kotlin 🌀 0048 Viral Advertising HackerRank Kotlin 🌀 0049 Circular Array Rotation HackerRank Kotlin 🌀 0050 Find Digits HackerRank Kotlin 🌀 0051 Repeated String HackerRank Kotlin 🌀 0052 Valid Palindrome LeetCode Kotlin 🌀 0053 Caesar Cipher HackerRank Kotlin 🌀 0054 Flipping an Image LeetCode Kotlin 🌀 0055 Funny String HackerRank Kotlin 🌀 0056 Shortest Distance to a Character LeetCode Kotlin 🌀 0057 Check Whether Two Strings are Almost Equivalent LeetCode Kotlin 🌀 0058 Replace Elements with Greatest Element on Right Side LeetCode Kotlin 🌀 0059 Count Negative Numbers in a Sorted Matrix LeetCode Kotlin 🌀 0060 Append and Delete HackerRank Kotlin -- 0061 Pangrams HackerRank Kotlin 🌀 0062 HackerRank in a String HackerRank Kotlin 🌀 0063 Longest Uncommon Subsequence I LeetCode Kotlin 🌀 0064 Move Zeroes LeetCode Kotlin 🌀 0065 Check If All 1's Are at Least Length K Places Away LeetCode Kotlin 🌀 0066 Beautiful Days at the Movies HackerRank Kotlin 🌀 0067 Cut the sticks HackerRank Kotlin 🌀 0068 Library Fine HackerRank Kotlin 🌀 0069 Jumping on the Clouds HackerRank Kotlin 🌀 0070 Sherlock and Array HackerRank Kotlin 🌀 0071 Missing Numbers HackerRank Kotlin 🌀 0072 Mark and Toys HackerRank Kotlin 🌀 0073 Grid Challenge HackerRank Kotlin 🌀 0074 The Love-Letter Mystery HackerRank Kotlin 🌀 0075 Closest Numbers HackerRank Kotlin 🌀 0076 Bill Division HackerRank Java 🌀 0077 Find the Median HackerRank Kotlin 🌀 0078 Thousand Separator LeetCode Kotlin 🌀 0079 Count Largest Group LeetCode Kotlin 🌀 0080 Count Number of Pairs With Absolute Difference K LeetCode Kotlin 🌀 0081 Number of 1 Bits LeetCode Kotlin 🌀 0082 Find the Difference of Two Arrays LeetCode Kotlin 🌀 0083 Contains Duplicate LeetCode Kotlin 🌀 0084 Assign Cookies LeetCode Kotlin 🌀 0085 Kth Distinct String in an Array LeetCode Kotlin 🌀 0086 Consecutive Characters LeetCode Kotlin 🌀 0087 Duplicate Zeros LeetCode Kotlin 🌀 0088 Majority Element LeetCode Kotlin 🌀 0089 Three Consecutive Odds LeetCode Kotlin 🌀 0090 Capitalize the Title LeetCode Kotlin 🌀 0091 Min Stack LeetCode Kotlin 🌀