User Jianmin Chen

5 votes

2 answers

23k views

LINQ and string.Split do it yourself practice

asked Apr 4, 2017 at 4:59

6 votes

1 answer

8k views

Use Infix expression to construct a binary expression tree

asked Aug 22, 2018 at 5:20

1 vote

2 answers

7k views

Hackerrank: Connected Cells in a Grid

asked Jan 2, 2017 at 8:09

5 votes

1 answer

6k views

Sudoku solver recursive solution with clear structure

asked Nov 6, 2017 at 3:59

13 votes

1 answer

5k views

Hackerrank Queen's Attack II

asked Jan 31, 2017 at 5:13

8 votes

2 answers

5k views

Hackerrank - value of friendship (II)

asked Jan 21, 2017 at 20:19

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

2 answers

4k views

Find the smallest substring that contains some given subset of characters

asked Sep 29, 2017 at 5:19

10 votes

4 answers

3k views

Leetcode 56: Merge Intervals

asked Jan 23, 2017 at 4:51

5 votes

1 answer

3k views

HackerEarth - SimpleFunction

asked Jan 2, 2017 at 3:39

2 votes

1 answer

3k views

Binary tree inorder traversal (iterative solution)

asked Mar 28, 2017 at 1:56

5 votes

1 answer

3k views

Hackerank - value of friendship

asked Jan 17, 2017 at 8:48

5 votes

3 answers

3k views

HackerRank woman codesprint: minimum cost

asked Nov 30, 2016 at 6:44

18 votes

4 answers

3k views

Leetcode 15. 3 Sum

asked Dec 27, 2016 at 6:26

2 votes

0 answers

3k views

Hackerrank: Max Score

asked May 16, 2017 at 6:24

5 votes

1 answer

2k views

Hackerrank: Sherlock and anagram

asked Jan 23, 2017 at 8:14

8 votes

1 answer

2k views

Hackerrank: Kindergarten Adventures

asked Mar 19, 2017 at 23:54

2 votes

0 answers

2k views

Leetcode 317: Shortest distance from all buildings

asked Feb 18, 2017 at 2:19

8 votes

3 answers

2k views

Leetcode 125. Valid Palindrome (better performance?)

asked Mar 10, 2017 at 6:10

2 votes

2 answers

2k views

Leetcode 49: Group Anagrams - Hash function design talk

asked Feb 5, 2017 at 1:56

2 votes

0 answers

2k views

HackerRank - Matrix Rotation

asked Dec 8, 2016 at 8:20

3 votes

1 answer

2k views

Four sum algorithm mock interview practice

asked Nov 22, 2017 at 7:48

4 votes

1 answer

1k views

Hackerrank: Lucky Number Eight (Dynamic Programming)

asked Mar 7, 2017 at 6:01

7 votes

1 answer

1k views

Leetcode 54: Spiral Matrix

asked Jan 25, 2018 at 5:37

3 votes

1 answer

1k views

Find kth largest element in the union of two sorted array

asked Jan 8, 2017 at 8:04

7 votes

1 answer

1k views

Leetcode 17. Letter Combinations of a Phone Number

asked Feb 9, 2017 at 7:24

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

4 votes

1 answer

1k views

Hackerrank: Prefix neighbors

asked Feb 14, 2017 at 7:57

1 vote

2 answers

983 views

HackerRank - Bear and Steady Gene

asked Nov 29, 2016 at 2:37

Stack Exchange Network

44 Questions

LINQ and string.Split do it yourself practice

Use Infix expression to construct a binary expression tree

Hackerrank: Connected Cells in a Grid

Sudoku solver recursive solution with clear structure

Hackerrank Queen's Attack II

Hackerrank - value of friendship (II)

Hackerrank: KnightL on a Chessboard

Hackerrank: Gridland Metro

Find the smallest substring that contains some given subset of characters

Leetcode 56: Merge Intervals

HackerEarth - SimpleFunction

Binary tree inorder traversal (iterative solution)

Hackerank - value of friendship

HackerRank woman codesprint: minimum cost

Leetcode 15. 3 Sum

Hackerrank: Max Score

Hackerrank: Sherlock and anagram

Hackerrank: Kindergarten Adventures

Leetcode 317: Shortest distance from all buildings

Leetcode 125. Valid Palindrome (better performance?)

Leetcode 49: Group Anagrams - Hash function design talk

HackerRank - Matrix Rotation

Four sum algorithm mock interview practice

Hackerrank: Lucky Number Eight (Dynamic Programming)

Leetcode 54: Spiral Matrix

Find kth largest element in the union of two sorted array

Leetcode 17. Letter Combinations of a Phone Number

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

Hackerrank: Prefix neighbors

HackerRank - Bear and Steady Gene