βHackMD
Start to Do Leetcode on Week 3
Week 3,4 - 10 Quest Morning + 15 Quest Afternoon
Day 11 - 4/12/2023
Day11 - Morning Lab
| 4/12 | Question |
|---|---|
| Suggested | 1323 Maximum 69 Number |
Day11 - Afternoon Lab
JavaQuest17 - minimum35Number οΌ modify of 1323. Maximum 69 Number)
JavaQuest18 - 2108. Find First Palindromic String in the Array
Day 12 - 5/12/2023
Day12 - Morning Lab
| 5/12 | Question |
|---|---|
| Finished | 2000. Reverse Prefix of Word |
| - | 942. DI String Match |
Day12 - Afternoon Lab
JavaQuest19 - Not Leetcode : Declare instance variables carYear and carModel
JavaQuest20 - 796. Rotate String
Day 13 - 6/12/2023
Day13 - Morning Lab
| 6/12 | Question |
|---|---|
| 1859. Sorting the Sentence | |
| 485. Max Consecutive Ones |
Day13 - Afternoon Lab
JavaQuest21 - 1952. Three Divisors
JavaQuest22 - 1281. Subtract the Product and Sum of Digits of an Integer
Day 14 - 7/12/2023
Day14 - Morning Lab
| 7/12 | Question |
|---|---|
| 1768. Merge Strings Alternately | |
| 2697. Lexicographically Smallest Palindrome |
Day14 - Afternoon Lab
JavaQuest23 - 1704. Determine if String Halves Are Alike
JavaQuest24 - 2006. Count Number of Pairs With Absolute Difference K
Day 15 - 8/12/2023
Day15 - Morning Lab
| 8/12 | Question |
|---|---|
| 2185. Counting Words With a Given Prefix | |
| 1941. Check if All Characters Have Equal Number of Occurrences |
Day15 - Afternoon Lab
JavaQuest25 - 434. Number of Segments in a String
JavaQuest26 - 1844. Replace All Digits with Characters
Day 16 - 11/12/2023
Day16 - Morning Lab
| 11/12 | Question |
|---|---|
| 2351. First Letter to Appear Twice |
Day16 - Afternoon Lab
JavaQuest27 - 367. Valid Perfect Square
JavaQuest28 -1967. Number of Strings That Appear as Substrings in Word
Day 17
Day17 - Morning Lab
| 1/8 | Question |
|---|---|
| Finished | 121. Best Time to Buy and Sell Stock |
Day17 - Afternoon
JavaQuest29 - 1556. Thousand Separator
JavaQuest30 - 2520. Count the Digits That Divide a Number
Day 18
Day18 - Morning Lab
| 2/8 | Question |
|---|---|
| == | 1417. Reformat The String |
| == | 566. Reshape the Matrix |
| Finished | 1588. Sum of All Odd Length Subarrays |
Day18 - Afternoon Lab
JavaQuest31 - 2716. Minimize String Length
JavaQuest32 - 1470. Shuffle the Array
Day 19
Day19 - Morning Lab
| 3/8 | Question |
|---|---|
| Finished | 2347. Best Poker Hand |
| == | 2022. Convert 1D Array Into 2D Array |
| == | 2605. Form Smallest Number From Two Digit Arrays |
Day19 - Afternoon Lab
JavaQuest33 - 905. Sort Array By Parity
JavaQuest34 - 1662. Check If Two String Arrays are
Day 20
Day20 - Morning Lab
| 4/8 | Question |
|---|---|
| Finished | 771. Jewels and Stones |
Day20 - Afternoon Lab
JavaQuest35 - 283. Move Zeroes
JavaQuest36 - 561. Array Partition
Day 21
Day21 - Morning Lab
| 7/8 | Skip Leetcode |
|---|
Day21 - Afternoon Lab
JavaQuest37 | 389. Find the Difference
JavaQuest38 | 1929. Concatenation of Array
Day 22
Day22 - Morning Lab
| 8/8 | Question |
|---|---|
| Finished | 202. Happy Number |
Day22 - Afternoon Lab
JavaQuest39 | 2810. Faulty Keyboard
JavaQuest40 | 2733. Neither Minimum nor Maximum
Day 23
Day23 - Morning Lab
| 9/8 | Question |
|---|---|
| Finished | 2073. Time Needed to Buy Tickets |
Day23 - Afternoon Lab
JavaQuest41 | 2427. Number of Common Factors
JavaQuest42 | 1672. Richest Customer Wealth
Day 24
Day24 AWS Day - 10/8/2023
JavaQuest43 | 1791. Find Center of Star Graph
JavaQuest44 | 2535. Difference Between Element Sum and Digit Sum of an Arraya
Day 25
Day25 - Morning Lab
| 11/8 | Question |
|---|---|
| Finished | 876. Middle of the Linked List |
Day25 - Afternoon Lab
JavaQuest45 | 844. Backspace String Compare
JavaQuest46 | 1979. Find Greatest Common Divisor of Array
Day 26
Day 26 - Morning Lab
| 14/8 | Question |
|---|---|
| == | 2500. Delete Greatest Value in Each Row |
Day 26 - Afternoon Lab
JavaQuest47 | 387. First Unique Character in a String
JavaQuest48 | 20. Valid Parentheses
Day 27
Day 27 - Morning Lab
| 15/8 | Question |
|---|---|
| Finished | 557. Reverse Words in a String III (Stack) |
| == | 232. Implement Queue using Stacks (Queue) |
Day 27 - Afternoon Lab
JavaQuest49 | 1979. Find Greatest Common Divisor of Array
JavaQuest50 | 2578. Split With Minimum Sum
Day 28
Day 28 - Morning Lab
| 16/8 | Question |
|---|---|
| Finished | 2395. Find Subarrays With Equal Sum (Set) |
| == | 13. Roman to Integer |
Day 28 - Afternoon Lab
JavaQuest51 | 830. Positions of Large Groups
JavaQuest52 | 342. Power of Fourps
Day 29
Day 29 - Morning Lab
| 17/8 | Question |
|---|---|
| Finished | 1700. Number of Students Unable to Eat Lunch |
Day 29 - Afternoon Lab
JavaQuest53 |1464. Maximum Product of Two Elements in an Array
JavaQuest54 | 2032. Two Out of Three
Day 30
Day 30 - Morning Lab
| 18/8 | Question |
|---|---|
| Finished | 1436. Destination City |
Day 30 - Afternoon Lab
JavaQuest55 | 2206. Divide Array Into Equal Pairs
JavaQuest56 | 2341. Maximum Number of Pairs in Array
Day 31
Day 31 - Morning Lab
| 21/8 | Question |
|---|---|
| Finished | 225. Implement Stack using Queues |
Day 31 - Afternoon Lab
JavaQuest57 | 2696. Minimum String Length After Removing Substrings
JavaQuest58 | 1837. Sum of Digits in Base K
Day 32
Day 32 - Morning Lab
| 22/8 | Question |
|---|---|
| Finished | 832. Flipping an Image |
| Finished | 1046. Last Stone Weight |
Day 32 - Afternoon Lab
SQL: 1757, 627, 595, 584, 1693, 197
Day 33
Day 33 - Morning Lab
| 23/8 | Question |
|---|---|
| Finished | 1518. Water Bottles |
| Finished | 1103. Distribute Candies to People |
Day 33 - Afternoon Lab
SQL: 1890, 1484, 1587, 1527, 197, 1103, 1518, 595
Day 34
Day 34 - Morning Lab
| 24/8 | Question |
|---|---|
| 1614. Maximum Nesting Depth of the Parentheses | |
| Finished | 1748. Sum of Unique Elements |
| Finished | 1837. Sum of Digits in Base K |
Day 34 - Afternoon Lab
SKIP
Day 35
Day 35 - Morning Lab
| 25/8 | Question |
|---|---|
| 2325. Decode the Message | |
| 844. Backspace String Compare | |
| Finished | 2399. Check Distances Between Same Letters |
Day 35 - Afternoon Lab
Day 36
Day 36 - Morning Lab
| 28/8 | Question |
|---|---|
| Finished | 367. Valid Perfect Square |
| Finished | 2465. Number of Distinct Averages |
Day 37
Day 37 - Morning Lab
| 29/8 | Question |
|---|---|
| Finished | 2085. Count Common Words With One Occurrence |
| Finished | 2717. Semi-Ordered Permutation |
| 1512. Number of Good Pairs | |
| 13. Roman to Integer |
Day 38
Day 38 - Morning Lab
| 30/8 | Question |
|---|---|
| 804. Unique Morse Code Words | |
| 2085. Count Common Words With One Occurrence | |
| FInished | 1217. Minimum Cost to Move Chips to The Same Position |
| Finished | 1812. Determine Color of a Chessboard Square |
| Finished | 2824. Count Pairs Whose Sum is Less than Target |
Day 39
Day 39 - Morning Lab
| 31/8 | Question |
|---|---|
| 933. Number of Recent Calls | |
| 326. Power of Three | |
| FInished | 1189. Maximum Number of Balloons |
| FInished | 908. Smallest Range I |
Day 39 β Afternoon Lab
SQL : 1148, 908, 1393, 175, 176, 608, 1193
Day 40
Day 40 - Morning Lab
| 1/9 | Question |
|---|---|
| 1700. Number of Students Unable to Eat Lunch | |
| 1342. Number of Steps to Reduce a Number to Zero | |
| Finsished | 2815. Max Pair Sum in an Array |
Day 41
Day 41 - Morning Lab
| 4/9 | Question |
|---|---|
| Finished | 1539. Kth Missing Positive Number |
| Finished | 2176. Count Equal and Divisible Pairs in an Array |
Day 42
Day 42 - Morning Lab
| 5/9 | Question |
|---|---|
| Finished | 2418. Sort the People |
| 2843. Count Symmetric Integers | |
| 2828. Check if a String Is an Acronym of Words |
Day 43
Day 43 - Morning Lab
| 6/9 | Question |
|---|---|
| Finished | 387. First Unique Character in a String |
Day 44
Day 44 - Morning Lab
| 7/9 | Question |
|---|---|
| Finished | 2367. Number of Arithmetic Triplets |
Day 45
Day 45 - Morning Lab
| 8/9 | Question |
|---|---|
| 2729. Check if The Number is Fascinating | |
| 2190. Most Frequent Number Following Key In an Array | |
| 1945. Sum of Digits of String After Convert | |
| 2496. Maximum Value of a String in an Array | |
| Finished | 2733. Neither Minimum nor Maximum |
| Finished | 2331. Evaluate Boolean Binary Tree |
Day 46 Career Day
Day 46 - Morning Lab
| 11/9 | Career Day |
|---|
Day 47
Day 47 - Morning Lab
| 12/9 | Question |
|---|---|
| Finished | 2373. Largest Local Values in a Matrix |
| 2506. Count Pairs Of Similar Strings | |
| 2511. Maximum Enemy Forts That Can Be Captured | |
| 2843. Count Symmetric Integers | |
| 1678. Goal Parser Interpretation | |
| 2525. Categorize Box According to Criteria |
Day 48
Day 48 - Morning Lab
| 13/9 | Question |
|---|---|
| 1827. Minimum Operations to Make the Array Increasing | |
| 2710. Remove Trailing Zeros From a String | |
| 2011. Final Value of Variable After Performing Operations | |
| 2160. Minimum Sum of Four Digit Number After Splitting Digits |
Day 49
Day 49 - Morning Lab
| 14/9 | Question |
|---|---|
| Finished | 2357. Make Array Zero by Subtracting Equal Amounts |
| 2578. Split With Minimum Sum | |
| 2544. Alternating Digit Sum | |
| 1925. Count Square Sum Triples |
Day 50
Day 50 - Morning Lab
| 15/9 | Question |
|---|---|
| Finished | 2744. Find Maximum Number of String Pairs |
Day 51
Day 51 - Morning Lab
| 18/9 | Question |
|---|---|
-
- 2942. Find Words Containing Character
-
- 2951. Find the Peaks
-
- 682. Baseball Game
-
- 2373. Largest Local Values in a Matrix
-
- 2848. Points That Intersect With Cars
-
- 456. 132 Pattern
-
- 728. Self Dividing Numbers
-
- 202. Happy Number
-
- 263. Ugly Number
-
- 373. Find K Pairs with Smallest Sums
-
- 2220. Minimum Bit Flips to Convert Number
-
- 1773. Count Items Matching a
-
- 1281. Subtract the Product and Sum of Digits of an
-
- 2652. Sum Multiples
-
- 1688. Count of Matches in Tournament
-
- 2119. A Number After a Double Reversal
-
- 2180. Count Integers With Even Digit Sum
-
- 1822. Sign of the Product of an Array
-
- 28. Find the Index of the First Occurrence in a String
-
- 2455. Average Value of Even Numbers That Are Divisible by Three
-
- 1732. Find the Highest Altitude
-
- 2037. Minimum Number of Moves to Seat Everyone
-
- 1539. Kth Missing Positive Number
-
- 412. Fizz Buzz
-
- 1800. Maximum Ascending Subarray Sum
-
- 1967. Number of Strings That Appear as Substrings in Word
-
- 2485. Find the Pivot
-
- 1832. Check if the Sentence Is Pangram
-
- 2717. Semi-Ordered Permutation
-
- 1742. Maximum Number of Balls in a Box
-
- 1528. Shuffle String
-
- 744. Find Smallest Letter Greater Than Target
-
- 771. Jewels and Stones
-
- 2114. Maximum Number of Words Found in Sentences
-
- 1773. Count Items Matching a Rule
-
- 2325. Decode the Message
-
- 119. Pascal's Triangle II
-
- 12. Integer to Roman
-
- 27. Remove Element
-
- 1920. Build Array from Permutation
-
- 1295. Find Numbers with Even Number of Digits|
-
- 704. Binary Search|
-
- 2500. Delete Greatest Value in Each Row
-
- 2309. Greatest English Letter in Upper and Lower Case (ASCII code)
Medium :
-
- 34.
-
- 122. Best Time to Buy and Sell Stock II
-
- 55. Jump Game
-
- 153. Find Minimum in Rotated Sorted Array
-
- 45. Jump Game II
-
- 2125. Number of Laser Beams in a Bank
-
- 1282. Group the People Given the Group Size They Belong To
-
- 2103. Rings and Rods
WarmUp Question
-
- 2235. Add Two Integers
-
- 709. To Lower Case
-
- 2413. Smallest Even Multiple
-
- 1108. Defanging an IP Address
-
- 2124. Check if All A's Appears Before All B's
JavaQuest
| Question No. | LeetCode Question |
|---|---|
| JavaQuest1 | Not Leetcode Primitive types and operators |
| JavaQuest2 | Not Leetcode Primitive types and operators |
| JavaQuest3 | Not Leetcode if-else + switch to calculate Month |
| JavaQuest4 | Not Leetcode for-loop : Print 10 numbers: even , > 0, divisible by 3 |
| JavaQuest5 | Not Leetcode for-loop + charAt() count 'c' and 'z' |
| JavaQuest6 | Not Leetcode for loop to print first 15 numbers in Fibonacci Sequence |
| JavaQuest7 | Not Leetcode Sum values of an array is 55 |
| JavaQuest8 | Not Leetcode find the second Max in an Array |
| JavaQuest9 | Not Leetcode Stirng method : indexOf() , trim(),replace(),length(),subString(), |
| JavaQuest10 | Not Leetcode Insert an elements into a specific position of the array |
| JavaQuest11 | 2651. Calculate Delayed Arrival Time |
| JavaQuest12 | 1. Two Sum |
| JavaQuest13 | 2469. Convert the Temperature |
| JavaQuest14 | 9. Palindrome Number |
| JavaQuest15 | 2278. Percentage of Letter in String |
| JavaQuest16 | 1304.Find N Unique Integers Sum up to Zero |
| JavaQuest17 | 1323. Maximum 69 Number( modify to minimum35Number ) |
| JavaQuest18 | 2108. Find First Palindromic String in the Array |
| JavaQuest19 | Not Leetcode Declare instance variables carYear and carModel |
| JavaQuest20 | 796. Rotate String |
| JavaQuest21 | 1952. Three Divisors |
| JavaQuest22 | 1281. Subtract the Product and Sum of Digits of an Integer |
| JavaQuest23 | 1704. Determine if String Halves Are Alike |
| JavaQuest24 | 2006. Count Number of Pairs With Absolute Difference K |
| JavaQuest25 | 434. Number of Segments in a String |
| JavaQuest26 | 1844. Replace All Digits with Characters |
| JavaQuest27 | 367. Valid Perfect Square |
| JavaQuest28 | 1967. Number of Strings That Appear as Substrings in Word |
| JavaQuest29 | 1556. Thousand Separator |
| JavaQuest30 | 2520. Count the Digits That Divide a Number |
| JavaQuest31 | 2716. Minimize String Length |
| JavaQuest32 | 1470. Shuffle the Array |
| JavaQuest33 | 905. Sort Array By Parity |
| JavaQuest34 | 1662. Check If Two String Arrays are Equivalent |
| JavaQuest35 | 283. Move Zeroes |
| JavaQuest36 | 561. Array Partition |
| JavaQuest37 | 389. Find the Difference |
| JavaQuest38 | 1929. Concatenation of Array |
| JavaQuest39 | 2810. Faulty Keyboard |
| JavaQuest40 | 2733. Neither Minimum nor Maximum |
| JavaQuest41 | 2427. Number of Common Factors |
| JavaQuest42 | 1672. Richest Customer Wealth |
| JavaQuest43 | 1791. Find Center of Star Graph |
| JavaQuest44 | 2535. Difference Between Element Sum and Digit Sum of an Arraya |
| JavaQuest45 | 844. Backspace String Compare |
| JavaQuest46 | 1979. Find Greatest Common Divisor of Array |
| JavaQuest47 | 387. First Unique Character in a String |
| JavaQuest48 | 20. Valid Parentheses |
| JavaQuest49 | 1351. Count Negative Numbers in a Sorted Matrix |
| JavaQuest50 | 2578. Split With Minimum Sum |
| JavaQuest51 | 830. Positions of Large Groups |
| JavaQuest52 | 342. Power of Fourps |
| JavaQuest53 | 1464. Maximum Product of Two Elements in an Array |
| JavaQuest54 | 2032. Two Out of Three |
| JavaQuest55 | 2206. Divide Array Into Equal Pairs |
| JavaQuest56 | 2341. Maximum Number of Pairs in Array |
| JavaQuest57 | 2696. Minimum String Length After Removing Substrings |
| JavaQuest58 | 1837. Sum of Digits in Base K |
