Leetcode Editorials

Number	Problem	Difficulty	Links
1	Two Sum	Easy	Python, Java, C#
2	Add Two Numbers	Medium	Python, Java, C#, C, C++, JavaScript, TypeScript
3	Longest Substring Without Repeating Characters	Medium	Python, Java, C#, C++, JavaScript, TypeScript
7	Reverse Integer	Medium	Python, Java, C#, C++, JavaScript, TypeScript
9	Palindrome Number	Easy	Python, Java, C#
14	Longest Common Prefix	Easy	Python, Java, C#
19	Remove Nth Node From End of List	Medium	Python, Java, C#, C++, JavaScript, TypeScript
21	Merge Two Sorted Lists	Easy	Python
22	Generate Parentheses	Medium	Python, Java, C#, C++
23	Merge k Sorted Lists	Hard	Python
26	Remove Duplicate from Sorted Array	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
27	Remove Element	Easy	Python, Java, C#
28	Find the Index of the First Occurrence in a String	Easy	Python, Java, C#
35	Search Insert Position	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
42	Trapping Rain Water	Hard	Python, Java, C#, C, C++, JavaScript, TypeScript, Go
43	Multiply Strings	Medium	Python
49	Group Anagrams	Medium	Python, Java, C#
56	Merge Intervals	Medium	Python, Java, C#, C++, JavaScript, TypeScript
58	Length of Last Word	Easy	Python, Java, C#
66	Plus One	Easy	Python, Java, C#
75	Sort Colors	Medium	Python, Java, C#
83	Remove Duplicates From Sorted List	Easy	Python, Java, C#
101	Symmetric Tree	Easy	Python, Java, C#, C++, JavaScript, TypeScript
121	Best Time to Buy and Sell Stock	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
125	Valid Palindrome	Easy	Python, Java, C#
136	Single Number	Easy	Python, Java, C#,C, C++, JavaScript, TypeScript
141	Linked List Cycle	Easy	Python, Java, C#
169	Majority Element	Easy	Python, Java, C#
206	Reverse Linked List	Easy	Python, Java, C#, C++, JavaScript, TypeScript
215	Kth Largest Element in an Array	Medium	Python
217	Contains Duplicate	Easy	Python, Java, C#
219	Contains Duplicate II	Easy	Python, Java, C#
242	Valid Anagram	Easy	Python, Java, C#
283	Move Zeroes	Easy	Python, Java, C#
344	Reverse String	Easy	Python, Java, C#
359	Logger Rate Limiter	Easy	Python, Java, C#, C++, JavaScript, TypeScript
387	First Unique Character in a String	Easy	Python, Java, C#
408	Valid Word Abbreviation	Easy	Python, Java, C#, C++
412	Fizz Buzz	Easy	Python, Java, C#
448	Find All Numbers Disappeared in an Array	Easy	Python, Java, C#
455	Assign Cookies	Easy	Python, Java, C#
485	Max Consecutive Ones	Easy	Python, Java, C#
500	Keyboard Row	Easy	Python
521	Longest Uncommon Subsequence	Easy	Python, Java, C#, C++
551	Student Attendence Record I	Easy	Python, Java, C#
557	Reverse Words in a String III	Easy	Python, Java
560	Subarray Sum Equals K	Medium	Java
561	Array Partition	Easy	Python, Java, C#
657	Robot Return to Origin	Easy	Python, Java, C#
682	Baseball Game	Easy	Python, Java, C#
709	To Lower Case	Easy	Python, Java, C#
760	Find Anagram Mappings	Easy	Python
771	Jewels and Stones	Easy	Python, Java, C#
804	Unique Morse Code Words	Easy	Python
832	Flipping an Image	Easy	Python
867	Transpose Matrix	Easy	Python
876	Middle of the Linked List	Easy	Python, Java, C#
905	Sort Array By Parity	Easy	Python, Java, C#
961	N-Repeated Element in Size 2N Array	Easy	Python
1002	Find Common Characters	Easy	Python, Java, C#
1047	Remove All Adjacent Duplicates in String	Easy	Python, Java, C#, C++
1085	Sum of Digits in the Minimum Number	Easy	Python, Java, C#
1086	High Five	Easy	Python
1108	Defanging an IP Address	Easy	Python, Java, C#
1119	Remove Vowels from a String	Easy	Python, Java, C#
1122	Relative Sort Array	Easy	Python
1133	Largest Unique Number	Easy	Python, Java, C#
1160	Find Words That Can Be Formed by Characters	Easy	Python
1165	Single-Row Keyboard	Easy	Python
1189	Maximum Number of Balloons	Easy	Python, Java, C#
1207	Unique Number of Occurrences	Easy	Python
1213	Intersection of Three Sorted Arrays	Easy	Python
1249	Minimum Remove to Make Valid Parentheses	Medium	Python, Java, C#, C++, JavaScript
1281	Subtract the Product and Sum of Digits of an Integer	Easy	Python, Java, C#
1295	Find Numbers with Even Number of Digits	Easy	Python, Java, C#
1299	Replace Elements with Greatest Element on Right Side	Easy	Python, Java, C#
1323	Maximum 69 Number	Easy	Python, Java, C#
1331	Rank Transform of an Array	Easy	Python
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	Medium	Python
1342	Number of Steps to Reduce a Number to Zero	Easy	Python, Java, C#
1346	Check If N and Its Double Exist	Easy	Python, Java, C#
1351	Count Negative Numbers in a Sorted Matrix	Easy	Python, Java, C#
1374	Generate a String With Characters That Have Odd Counts	Easy	Python, Java, C#
1394	Find Lucky Integer in an Array	Easy	Python, Java, C#
1413	Minimum Value to Get Positive Step by Step Sum	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
1426	Counting Elements	Easy	Python, Java, C#
1431	Kids With the Greatest Number of Candies	Easy	Python
1446	Consecutive Characters	Easy	Python, Java, C#
1450	Number of Students Doing Homework at a Given Time	Easy	Python, Java, C#
1460	Make Two Arrays Equal by Reversing Subarrays	Easy	Python, Java, C#
1464	Maximum Product of Two Elements in an Array	Easy	Python
1470	Shuffle the Array	Easy	Python, Java, C#
1480	Running Sum of 1d Array	Easy	Python, Java, C#
1491	Average Salary Excluding the Minimum and Maximum Salary	Easy	Python, Java, C#
1496	Path Crossing	Easy	Python, Java
1512	Number of Good Pairs	Easy	Python, Java, C#, C++
1528	Shuffle String	Easy	Python
1550	Three Consecutive Odds	Easy	Python, Java, C#
1551	Minimum Operations to make Array Equal	Medium	Python, Java, C#, C, C++, JavaScript, TypeScript
1572	Matrix Diagonal Sum	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
1603	Design Parking System	Easy	Python, Java, C#, C++, JavaScript, TypeScript
1614	Maximum Nesting Depth of the Parentheses	Easy	Python
1636	Sort Array by Increasing Frequency	Easy	Python
1662	Check If Two String Arrays are Equivalent	Easy	Python, Java, C#, JavaScript, TypeScript
1672	Richest Customer Wealth	Easy	Python, Java, C#
1678	Goal Parser Interpretation	Easy	Python, Java
1684	Count the Number of Consistent Strings	Easy	Python, Java
1704	Determine if String Halves Are Alike	Easy	Python
1732	Find the Highest Altitude	Easy	Python
1736	Latest Time by Replacing Hidden Digits	Easy	Python, Java, C#
1748	Sum of Unique Elements	Easy	Python, Java, C#
1762	Buildings With an Ocean View	Medium	Python, Java, C#, C++, JavaScript, TypeScript
1768	Merge Strings Alternately	Easy	Python
1773	Count Items Matching a Rule	Easy	Python
1784	Check if Binary String Has at Most One Segment of Ones	Easy	Python, Java, C#, C++
1790	Check if One String Swap Can Make Strings Equal	Easy	Python, Java, C#, C++
1800	Maximum Ascending Subarray Sum	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
1816	Truncate Sentence	Easy	Python
1822	Sign of the Product of an Array	Easy	Python, Java, C#
1832	Check if the Sentence is Pangram	Easy	Python
1844	Replace All Digits with Characters	Easy	Python
1848	Minimum Distance to the Target Element	Easy	Python, Java, C#
1854	Maximum Population Year	Easy	Python
1876	Substrings of Size Three with Distinct Characters	Easy	Python
1894	Find the Student that Will Replace the Chalk	Medium	Python, Java, C#, C++, JavaScript, TypeScript
1897	Redistribute Characters to Make All Strings Equal	Easy	Python, Java, C#, C++, JavaScript, TypeScript
1920	Build Array from Permutation	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
1929	Concatenation of Array	Easy	Python, Java, C#
1935	Maximum Number of Words You Can Type	Easy	Python
1941	Check if All Characters Have Equal Number of Occurrences	Easy	Python
1967	Number of Strings That Appear as Substrings in Word	Easy	Python
1985	Find the Kth Largest Integer in the Array	Medium	Python
2000	Reverse Prefix of Word	Easy	Python
2006	Count Number of Pairs With Absolute Difference K	Easy	Python
2011	Final Value of Variable After Performing Operations	Easy	Python, Java, C#
2032	Two Out of Three	Easy	Python
2037	Minimum Number of Moves to Seat Everyone	Easy	Python, Java, C#
2042	Check if Numbers Are Ascending in a Sentence	Easy	Python
2053	Kth Distinct String in an Array	Easy	Python
2057	Smallest Index With Equal Value	Easy	Python, Java, C#
2068	Check Whether Two Strings are Almost Equivalent	Easy	Python, Java, C#
2085	Count Common Words With One Occurrence	Easy	Python, Java, C#
2089	Find Target Indicies After Sorting	Easy	Python, Java, C#
2103	Rings and Rods	Easy	Python
2108	Find First Palindromic String in the Array	Easy	Python
2109	Adding Spaces to a String	Medium	Python, Java, C#
2114	Maximum Number of Words Found in Sentences	Easy	Python
2119	A Number After a Double Reversal	Easy	Python, Java, C#, C, C++, Javascript, TypeScript
2124	Check if All A's Appear Before All B's	Easy	Python
2133	Check if Every Row and Column Contains all Numbers	Easy	Python, Java, C#
2138	Divide a String Intro Groups of Size K	Easy	Python, Java, C#
2144	Minimum Cost of Buying Candies With Discount	Easy	Python
2148	Count Elements With Strictly Smaller and Greater Elements	Easy	Python, Java, C#
2169	Count Operations to Obtain Zero	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2176	Count Equal and Divisible Pairs in an Array	Easy	Python, Java, C#
2185	Counting Words With a Given Prefix	Easy	Python, Java, C#
2186	Minimum Number of Steps to Make Two Strings Anagram II	Medium	Python, Java, C#, C++
2194	Cells in a Range on an Excel Sheet	Easy	Python, Java, C#, JavaScript, TypeScript
2215	Find the Difference of Two Arrays	Easy	Python, Java, C#
2225	Find Players With Zero or One Losses	Medium	Python
2229	Check if an Array is Consecutive	Easy	Python, Java, C#
2235	Add Two Integers	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2239	Find Closest Number to Zero	Easy	Python, Java, C#
2248	Intersection of Multiple Arrays	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2255	Count Prefixes of a Given String	Easy	Python
2264	Largest 3-Same-Digit Number in String	Easy	Python, Java, C#
2270	Number of Ways to Split Array	Medium	Python, Java, C#, C++
2273	Find Resultant Array After Removing Anagrams	Easy	Python, Java, C#, C++, C
2278	Percentage of Letter in String	Easy	Python, Java, C#
2279	Maximum Bags With Full Capacity of Rocks	Medium	Python, Java, C#
2309	Greatest English Letter in Upper and Lower Case	Easy	Python, Java, C#
2347	Best Poker Hand	Easy	Python
2348	Number of Zero-Filled Subarrays	Medium	Python, Java, C#, C++
2351	First Letter to Appear Twice	Easy	Python, Java, C#
2363	Merge Similar Items	Easy	Python
2390	Removing Stars From a String	Medium	Python, Java, C#, C++
2395	Find Subarrays With Equal Sum	Easy	Python, Java, C#
2396	Strictly Palindrome Number	Medium	Python, Java, C#, C, C++, JavaScript, TypeScript
2404	Most Frequent Even Element	Easy	Python, Java, C#
2414	Length of the Longest Alphabetical Continuous Substring	Medium	Python, Java, C#
2418	Sort the People	Easy	Python
2432	The Employee That Worked on the Longest Task	Easy	Python, Java, C#, C++, JavaScript, TypeScript
2441	Largest Positive Integer That Exists With Its Negative	Easy	Python
2469	Convert the Temperature	Easy	Python, Java, C#, C++, JavaScript, TypeScript
2496	Maximum Value of a String in an Array	Easy	Python
2506	Count Pairs of Similar Strings	Easy	Python, Java, C#
2520	Count the Digits That Divide a Number	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2540	Minimum Common Value	Easy	Python, Java, C#
2553	Separate the Digits in an Array	Easy	Python
2535	Difference Between Element Sum and Digit Sum of an Array	Easy	Python, Java, C#
2579	Count Total Number of Colored Cells	Medium	Python, Java, C#, C, C++, JavaScript, TypeScript
2586	Count the Number of Vowel Strings in Range	Easy	Python, Java, C#
2640	Find the Score of All Prefixes of an Array	Medium	Python, Java, C#
2643	Row With Maximum Ones	Easy	Python, Java, C#
2651	Calculate Delayed Arrival Time	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2656	Maximum Sum With Exactly K Elements	Easy	Python, Java, C#
2667	Create Hello World Function	Easy	JavaScript, TypeScript
2678	Number of Senior Citizens	Easy	Python, Java, C#
2706	Buy Two Chocolates	Easy	Python, Java, C#
2710	Remove Trailing Zeroes From a String	Easy	Python
2716	Minimize String Length	Easy	Python, Java, C#
2733	Neither Minimum nor Maximum	Easy	Python, Java, C#
2744	Find Maximum Number of String Pairs	Easy	Python
2769	Find the Maximum Achievable Number	Easy	Python, Java, C#
2778	Sum of Squares of Special Elements	Easy	Python
2785	Sort Vowels in a String	Medium	Python
2798	Number of Employees Who Met the Target	Easy	Python, Java, C#
2810	Faulty Keyboard	Easy	Python
2828	Check if a String Is an Acronym of Words	Easy	Python, Java, C#, C++, JavaScript, TypeScript
2839	Check if Strings Can be Made Equal With Operations I	Easy	Python
2869	Minimum Operations to Collect Elements	Easy	Python, Java, C#, C++
2877	Create a DataFrame from List	Easy	Python
2878	Get the Size of a DataFrame	Easy	Python
2879	Display the First Three Rows	Easy	Python
2880	Select Data	Easy	Python
2881	Create a New Column	Easy	Python
2882	Drop Duplicate Rows	Easy	Python
2883	Drop Missing Data	Easy	Python
2884	Modify Columns	Easy	Python
2885	Rename Columns	Easy	Python
2886	Change Data Type	Easy	Python
2887	Fill Missing Data	Easy	Python
2888	Reshape Data: Concatenate	Easy	Python
2923	Find Champion I	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
2942	Find Words Containing Character	Easy	Python, Java, C#
2951	Find the Peaks	Easy	Python, Java, C#
2956	Find Common Elements Between Two Arrays	Easy	Python
2974	Minimum Number Game	Easy	Python, Java, C#
3005	Count Elements With Maximum Frequency	Easy	Python
3019	Number of Changing Keys	Easy	Python, Java, C#
3028	Ant on the Boundary	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
3046	Split the Array	Easy	Python, Java, C#
3065	Minimum Operations to Exceed Threshold Value I	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
3099	Harshad Number	Easy	Python, Java, C#
3105	Longest Strictly Increasing or Strictly Decreasing Subarray	Easy	Python, Java, C#
3110	Score of a String	Easy	Python, Java, C#
3131	Find the Integer Added to Array I	Easy	Python, Java, C#
3146	Permutation Difference between Two Strings	Easy	Python
3147	Taking Maximum Energy From the Mystic Dungeon	Medium	Python
3151	Special Array I	Easy	Python, Java, C#
3159	Find Occurrences of an Element in an Array	Medium	Python, Java, C#, C++
3162	Find the Number of Good Pairs I	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
3168	Minimum Number of Chairs in a Waiting Room	Easy	Python
3186	Maximum Total Damage Without Spell Casting	Medium	Python, Java, C++, C#
3210	Find the Encrypted String	Easy	Python
3232	Find if Digit Game Can Be Won	Easy	Python, Java, C#
3242	Design Neighbor Sum Service	Easy	Python, Java, C#
3248	Snake in Matrix	Easy	Python
3285	Find Indices of Stable Mountains	Easy	Python, Java, C#
3289	The Two Sneaky Numbers of Digitville	Easy	Python
3300	Minimum Element After Replacement With Digit Sum	Easy	Python
3340	Check Balanced String	Easy	Python
3350	Adjacent Increasing Subarrays Detection II	Medium	Python, Java, C#, C++, C
3392	Count Subarrays of Length Three with a Condition	Easy	Python, Java, C#
3397	Maximum Number of Distinct Elements After Operations	Medium	Python, Java, C#, C++
3461	Check If Digits Are Equal in String After Operations I	Easy	Python
3467	Transform Array by Parity	Easy	Python, Java, C#
3487	Maximum Unique Subarray Sum After Deletion	Easy	Python, Java, C#, C++, JavaScript, TypeScript
3498	Reverse Degree of a String	Easy	Python
3512	Minimum Operations to Make Array Sum Divisible by k	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
3516	Find Closest Person	Easy	Python, Java, C#
3539	Find Sum of Array Product of Magical Sequences	Hard	Python, Java, C#, C, C++, JavaScript, TypeScript, Go
3541	Find Most Frequent Vowel and Consonant	Easy	Python
3581	Count Odd Letters from Number	Easy	Python
3612	Process String with Special Operations I	Medium	Python, Java, C#, C++
3662	Filter Characters by Frequency	Easy	Python, Java, C#
3667	Sort Array by Absolute Value	Easy	Python
3668	Restore Finishing Order	Easy	Python, Java, C#, C++
3674	Minimum Operations to Equalize Array	Easy	Python, Java, C#, C, C++, JavaScript, TypeScript
3682	Minimum Index Sum of Common Elements	Medium	Python, Java, C#
3683	Earliest Time to Finish One Task	Easy	Python, Java, C#
3718	Smallest Missing Multiple of k	Easy	Python, Java, C#, C++