LeetCode

Table of Contents

• LeetCode by JavaScript
• LeetCode by Swift
• LeetCode by Python
• LeetCode by C
• LeetCode by SQL

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LeetCode by JavaScript

Array

#	Title	Solution	Difficulty	Runtime	Memory Usage
1	Two Sum	JavaSrcript	Easy	112 ms (41.45%)	39.4 MB (81.97%)

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LeetCode by Swift

Array

#	Title	Solution	Difficulty	Runtime	Memory Usage
1	Two Sum	Swift	Easy	36 ms (69.84%)	21.3 MB (44.99%)
485	Max Consecutive Ones	Swift	Easy	288 ms (71.75%)	21.3 MB (35.37%)

Math

#	Title	Solution	Difficulty	Runtime	Memory Usage
7	Reverse Integer	Swift	Easy	8 ms (88.91%)	20.7 MB (59.07%)
9	Palindrome Number	Swift	Easy	24 ms (100.00%)	21.2 MB (40.85%)
263	Ugly Number	Swift	Easy	8 ms (76.19%)	20.4 MB (100.00%)
292	Nim Game	Swift	Easy	4 ms (88.71%)	20.9 MB (35.11%)
326	Power of Three	Swift	Easy	80 ms (30.34%)	21 MB (92.11%)
367	Valid Perfect Square	Swift	Easy	8 ms (60.71%)	20.8 MB (25.00%)
1009	Complement of Base 10 Integer	Swift	Easy	4 ms (96.83%)	20.8 MB (28.578%)
1351	Count Negative Numbers in a Sorted Matrix	Swift	Easy	160 ms (61.24%)	20.9 MB (75.97%)

Matrix

#	Title	Solution	Difficulty	Runtime	Memory Usage
542	01 Matrix	Swift	Medium	536 ms (93.94%)	22.1 MB (100.00%)
556	Reshape the Matrix	Swift	Easy	124 ms (64.10%)	21.2 MB (100.00%)
766	Toeplitz Matrix	Swift	Easy	72 ms (95.83%)	20.7 MB (87.50%)

String

#	Title	Solution	Difficulty	Runtime	Memory Usage
3	Longest Substring Without Repeating Characters	Swift	Medium	52 ms (73.94%)	20.9 MB (85.38%)
38	Count and Say	Swift	Easy	12 ms (75.27%)	20.6 MB (79.57%)
551	Student Attendance Record I	Swift	Easy	4 ms (89.13%)	21.8 MB (10.64%)

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LeetCode by Python

Array

#	Title	Solution	Difficulty	Runtime	Memory Usage
1	Two Sum	Python	Easy	28 ms (98.70%)	14.1 MB (30.66%)
4	Median of Two Sorted Arrays	Python	Hard	92 ms (69.12%)	14.5 MB (78.46%)
27	Remove Element	Python	Easy	32 ms (77.71%)	14.2 MB (75.91%)
36	Valid Sudoku	Python	Medium	76 ms (91.19%)	12.9 MB (25.58%)
41	First Missing Positive	Python	Hard	ms (%)	MB (%)
66	Plus One	Python	Easy	ms (%)	MB (%)
135	Candy	Python	Easy	156 ms (84.83%)	16.8 MB (45.52%)
167	Two Sum II - Input array is sorted	Python	Easy	44 ms (93.95%)	13.4 MB (8.96%)
268	Missing Number	Python	Easy	120 ms (62.09%)	13.7 MB (68.94%)
349	Intersection of Two Arrays	Python	Easy	84 ms (12.03%)	14.1 MB (22.81%)
401	Binary Watch	Python	Easy	20 ms (71.98%)	12.8 MB (44.58%)
485	Max Consecutive Ones	Python	Easy	320 ms (87.26%)	12.9 MB (88.49%)
500	Keyboard Row	Python	Easy	20 ms (97.99%)	13.8 MB (50.68%)
871	Minimum Number of Refueling Stops	Python	Hard	1835 ms (10.63%)	14.3 MB (36.38%)
1338	Reduce Array Size to The Half	Python	Medium	597 ms (97.71%)	32.3 MB (57.69%)

Linked List

#	Title	Solution	Difficulty	Runtime	Memory Usage
21	Merge Two Sorted Lists	Python	Easy	44 ms (23.34%)	14.2 MB (84.73%)

Math

#	Title	Solution	Difficulty	Runtime	Memory Usage
7	Reverse Integer	Python	Easy	12 ms (98.33%)	12.7 MB (50.10%)
9	Palindrome Number	Python	Easy	44 ms (90.32%)	12.8 MB (42.07%)
29	Divide Two Integers	Python	Medium	36 ms (45.41%)	14 MB (99.98%)
50	Pow(x, n)	Python	Medium	46 ms (11.01%)	14.3 MB (16.57%)
263	Ugly Number	Python	Easy	16 ms (88.03%)	12.6 MB (90.51%)
292	Nim Game	Python	Easy	16 ms (73.57%)	12.8 MB (38.45%)
326	Power of Three	Python	Easy	76 ms (80.00%)	13.7 MB (89.35%)
367	Valid Perfect Square	Python	Easy	24 ms (93.49%)	13.8 MB (48.28%)
371	Sum of Two Integers	Python	Easy	16 ms (70.42%)	12.8 MB (41.10%)
1009	Complement of Base 10 Integer	Python	Easy	28 ms (81.73%)	13.8 MB (73.88%)
1351	Count Negative Numbers in a Sorted Matrix	Python	Easy	132 ms (60.84%)	14.6 MB (95.38%)
1380	Lucky Numbers in a Matrix	Python	Easy	168 ms (40.78%)	13.9 MB (85.56%)
1913	Maximum Product Difference Between Two Pairs	Python	Easy	172 ms (52.16%)	15.4 MB (53.08%)
1925	Count Square Sum Triples	Python	Easy	1796 ms (18.62%)	13.9 MB (98.29%)

Matrix

#	Title	Solution	Difficulty	Runtime	Memory Usage
542	01 Matrix	Python	Medium	552 ms (98.50%)	15.8 MB (95.65%)
556	Reshape the Matrix	Python	Easy	96 ms (96.03%)	14.8 MB (49.25%)
766	Toeplitz Matrix	Python	Easy	84 ms (94.38%)	13.8 MB (74.67%)

String

#	Title	Solution	Difficulty	Runtime	Memory Usage
3	Longest Substring Without Repeating Characters	Python	Medium	56 ms (88.43%)	13.9 MB (63.78%)
5	Longest Palindromic Substring	Python	Medium	1008 ms (75.10%)	13.8 MB (84.63%)
6	ZigZag Conversion	Python	Medium	ms (%)	MB (%)
12	Integer to Roman	Python	Medium	ms (%)	MB (%)
13	Roman to Integer	Python	Easy	47 ms (95.33%)	13.9 MB (31.19%)
14	Longest Common Prefix	Python	Easy	36 ms (68.12%)	14 MB (23.87%)
20	Valid Parentheses	Python	Easy	16 ms (90.91%)	12.9 MB (25.60%)
27	Implement strStr()	Python	Easy	20 ms (99.15%)	14.1 MB (23.38%)
30	Substring with Concatenation of All Words	Python	Hard	679 ms (52.45%)	14.2 MB (38.75%)
32	Longest Valid Parentheses	Python	Hard	ms (%)	MB (%)
38	Count and Say	Python	Easy	36 ms (69.99%)	13.9 MB (54.59%)
43	Multiply Strings	Python	Medium	ms (%)	MB (%)
44	Wildcard Matching	Python	Hard	ms (%)	MB (%)
67	Add Binary	Python	Easy	28 ms (90.19%)	13.9 MB (99.99%)
242	Valid Anagram	Python	Easy	48 ms (54.93%)	13.4 MB (97.49%)
273	Integer to English Words	Python	Hard	16 ms (92.36%)	12.7 MB (73.82%)
290	Word Pattern	Python	Easy	8 ms (99.33%)	12.6 MB (100.00%)
344	Reverse String	Python	Easy	188 ms (23.86%)	44.1 MB (5.05%)
383	Ransom Note	Python	Easy	68 ms (44.15%)	13.9 MB (73.26%)
387	First Unique Character in a String	Python	Easy	135 ms (72.85%)	14.3 MB (7.34%)
551	Student Attendance Record I	Python	Easy	28 ms (74.71%)	13.9 MB (39.20%)
791	Custom Sort String	Python	Medium	32 ms (62.80%)	14 MB (93.39%)
804	Unique Morse Code Words	Python	Easy	51 ms (61.30%)	13.8 MB (75.48%)

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LeetCode by C

Linked List

#	Title	Solution	Difficulty	Runtime	Memory Usage
2	Add Two Numbers	C	Medium	12 ms (79.76%)	7.2 MB (88.54%)
24	Swap Nodes in Pairs	C	Medium	0 ms (100.00%)	5.5 MB (59.43%)
237	Delete Node in a Linked List	C	Easy	4 ms (92.20%)	6.1 MB (59.76%)

Math

#	Title	Solution	Difficulty	Runtime	Memory Usage
326	Power of Three	C	Easy	16 ms (59.45%)	5.8 MB (71.25%)
1009	Complement of Base 10 Integer	C	Easy	0 ms (100.00%)	5.2 MB (48.84%)

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LeetCode by SQL

#	Title	Solution	Difficulty	Runtime	Memory Usage
175	Combine Two Tables	SQL	Easy	431 ms (60.16%)	0 B (100.00%)
176	Second Highest Salary	SQL	Easy	269 ms (56.36%)	0 B (100.00%)
181	Employees Earning More Than Their Managers	SQL	Easy	349 ms (83.88%)	0 B (100.00%)
182	Duplicate Emails	SQL	Easy	336 ms (80.73%)	0 B (100.00%)
183	Customers Who Never Order	SQL	Easy	538 ms (65.86%)	0 B (100.00%)
196	Delete Duplicate Emails	SQL	Easy	2101 ms (56.82%)	0 B (100.00%)
197	Rising Temperature	SQL	Easy	440 ms (79.88%)	0 B (100.00%)
584	Find Customer Referee	SQL	Easy	497 ms (68.24%)	0 B (100.00%)
586	Customer Placing the Largest Number of Orders	SQL	Easy	357 ms (99.49%)	0 B (100.00%)
595	Big Countries	SQL	Easy	237 ms (99.81%)	0 B (100.00%)
596	Classes More Than 5 Students	SQL	Easy	264 ms (97.67%)	0 B (100.00%)
620	Not Boring Movies	SQL	Easy	183 ms (98.39%)	0 B (100.00%)