User Jianmin Chen

18 votes

4 answers

3k views

Leetcode 15. 3 Sum

asked Dec 27, 2016 at 6:26

13 votes

1 answer

5k views

Hackerrank Queen's Attack II

asked Jan 31, 2017 at 5:13

10 votes

4 answers

3k views

Leetcode 56: Merge Intervals

asked Jan 23, 2017 at 4:51

8 votes

2 answers

5k views

Hackerrank - value of friendship (II)

asked Jan 21, 2017 at 20:19

8 votes

2 answers

1k views

Find kth largest element in the union of two sorted array (Follow up)

asked Feb 9, 2017 at 4:01

8 votes

3 answers

2k views

Leetcode 125. Valid Palindrome (better performance?)

asked Mar 10, 2017 at 6:10

8 votes

1 answer

2k views

Hackerrank: Kindergarten Adventures

asked Mar 19, 2017 at 23:54

7 votes

1 answer

1k views

Leetcode 17. Letter Combinations of a Phone Number

asked Feb 9, 2017 at 7:24

7 votes

1 answer

1k views

Leetcode 54: Spiral Matrix

asked Jan 25, 2018 at 5:37

6 votes

3 answers

736 views

Recursive function challenge

asked Jan 30, 2018 at 5:23

6 votes

1 answer

8k views

Use Infix expression to construct a binary expression tree

asked Aug 22, 2018 at 5:20

6 votes

1 answer

519 views

Hackerrank - Maximum Disjoint Subtree Product

asked May 4, 2017 at 6:08

5 votes

1 answer

5k views

Hackerrank: KnightL on a Chessboard

asked Mar 4, 2017 at 4:29

5 votes

2 answers

4k views

Hackerrank: Gridland Metro

asked Mar 4, 2017 at 7:48

5 votes

1 answer

3k views

Hackerank - value of friendship

asked Jan 17, 2017 at 8:48

5 votes

1 answer

2k views

Hackerrank: Sherlock and anagram

asked Jan 23, 2017 at 8:14

5 votes

1 answer

3k views

HackerEarth - SimpleFunction

asked Jan 2, 2017 at 3:39

5 votes

3 answers

3k views

HackerRank woman codesprint: minimum cost

asked Nov 30, 2016 at 6:44

5 votes

1 answer

668 views

Longest Arithmetic Progression Algorithm

asked Feb 24, 2018 at 6:55

5 votes

2 answers

23k views

LINQ and string.Split do it yourself practice

asked Apr 4, 2017 at 4:59

5 votes

2 answers

4k views

Find the smallest substring that contains some given subset of characters

asked Sep 29, 2017 at 5:19

5 votes

1 answer

6k views

Sudoku solver recursive solution with clear structure

asked Nov 6, 2017 at 3:59

4 votes

1 answer

647 views

HackerRank NCR codesprint: Spiral Message

asked Dec 9, 2016 at 7:41

4 votes

1 answer

1k views

Hackerrank: Lucky Number Eight (Dynamic Programming)

asked Mar 7, 2017 at 6:01

4 votes

1 answer

598 views

Leetcode 125. Valid Palindrome

asked Mar 10, 2017 at 5:19

4 votes

1 answer

1k views

Hackerrank: Prefix neighbors

asked Feb 14, 2017 at 7:57

3 votes

0 answers

787 views

Hackerrank: Sherlock and anagram (optimal time complexity)

asked Feb 9, 2017 at 5:02

3 votes

1 answer

838 views

Ternary tree preoder traversal (recursive implementation)

asked Feb 25, 2017 at 21:12

3 votes

0 answers

678 views

Hackerearth Simple Function - Follow-up

asked Jan 8, 2017 at 4:17

3 votes

1 answer

1k views

Find kth largest element in the union of two sorted array

asked Jan 8, 2017 at 8:04

Stack Exchange Network

44 Questions

Leetcode 15. 3 Sum

Hackerrank Queen's Attack II

Leetcode 56: Merge Intervals

Hackerrank - value of friendship (II)

Find kth largest element in the union of two sorted array (Follow up)

Leetcode 125. Valid Palindrome (better performance?)

Hackerrank: Kindergarten Adventures

Leetcode 17. Letter Combinations of a Phone Number

Leetcode 54: Spiral Matrix

Recursive function challenge

Use Infix expression to construct a binary expression tree

Hackerrank - Maximum Disjoint Subtree Product

Hackerrank: KnightL on a Chessboard

Hackerrank: Gridland Metro

Hackerank - value of friendship

Hackerrank: Sherlock and anagram

HackerEarth - SimpleFunction

HackerRank woman codesprint: minimum cost

Longest Arithmetic Progression Algorithm

LINQ and string.Split do it yourself practice

Find the smallest substring that contains some given subset of characters

Sudoku solver recursive solution with clear structure

HackerRank NCR codesprint: Spiral Message

Hackerrank: Lucky Number Eight (Dynamic Programming)

Leetcode 125. Valid Palindrome

Hackerrank: Prefix neighbors

Hackerrank: Sherlock and anagram (optimal time complexity)

Ternary tree preoder traversal (recursive implementation)

Hackerearth Simple Function - Follow-up

Find kth largest element in the union of two sorted array