User Jianmin Chen

5

19

votes

4

answers

2k

views

Leetcode 15. 3 Sum

Jul 13 '18 at 20:58 200_success 140k

1

13

votes

1

answer

4k

views

Hackerrank Queen's Attack II

c# programming-challenge time-limit-exceeded matrix chess

Nov 18 '17 at 4:58 Community♦ 1

3

10

votes

4

answers

2k

views

Leetcode 56: Merge Intervals

c# algorithm programming-challenge time-limit-exceeded interval

Sep 7 at 0:05 Zuabros 131

2

8

votes

2

answers

593

views

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

c# programming-challenge array binary-search

Dec 18 '17 at 0:26 Jianmin Chen 2,366

2

8

votes

2

answers

3k

views

Hackerrank - value of friendship (II)

c# object-oriented programming-challenge interview-questions graph

Sep 30 '17 at 14:20 Mast 12.2k

3

8

votes

1

answer

1k

views

Hackerrank: Kindergarten Adventures

c# algorithm programming-challenge tree

Jun 6 '17 at 13:20 Der Kommissar 19.9k

5

8

votes

3

answers

1k

views

Leetcode 125. Valid Palindrome (better performance?)

c# performance algorithm programming-challenge palindrome

Mar 10 '17 at 16:11 Community♦ 1

3

7

votes

1

answer

828

views

Leetcode 54: Spiral Matrix

c# algorithm programming-challenge matrix

Jan 30 '18 at 21:08 janos 106k

7

votes

1

answer

796

views

Leetcode 17. Letter Combinations of a Phone Number

c# algorithm programming-challenge depth-first-search backtracking

Feb 10 '17 at 8:03 Community♦ 1

2

6

votes

3

answers

513

views

Recursive function challenge

c# algorithm programming-challenge recursion

May 26 '19 at 15:17 dfhwze 13.6k

1

5

votes

1

answer

4k

views

Sudoku solver recursive solution with clear structure

c# algorithm interview-questions sudoku depth-first-search

Dec 18 '18 at 0:42 Guest 1

1

5

votes

1

answer

5k

views

Use Infix expression to construct a binary expression tree

c# algorithm programming-challenge parsing math-expression-eval

Aug 23 '18 at 12:54 Community♦ 1

2

5

votes

1

answer

355

views

Hackerrank - Maximum Disjoint Subtree Product

c# tree graph dynamic-programming depth-first-search

Jul 1 '18 at 18:42 Community♦ 1

5

votes

1

answer

509

views

Longest Arithmetic Progression Algorithm

c# programming-challenge interview-questions dynamic-programming

Mar 26 '18 at 6:02 Jianmin Chen 2,366

3

5

votes

2

answers

2k

views

Find the smallest substring that contains some given subset of characters

c# algorithm strings interview-questions

Sep 30 '17 at 20:13 200_success 140k

1

5

votes

2

answers

16k

views

LINQ and string.Split do it yourself practice

c# strings programming-challenge linq reinventing-the-wheel

Apr 4 '17 at 10:04 Community♦ 1

1

5

votes

2

answers

2k

views

Hackerrank: Gridland Metro

c# algorithm programming-challenge timeout

Mar 8 '17 at 3:28 Community♦ 1

2

5

votes

1

answer

2k

views

Hackerank - value of friendship

c# algorithm programming-challenge graph

Jan 19 '17 at 23:12 Jianmin Chen 2,366

5

votes

1

answer

3k

views

HackerEarth - SimpleFunction

c# algorithm programming-challenge time-limit-exceeded hash-map

Jan 8 '17 at 19:13 greybeard 3,452

1

5

votes

3

answers

2k

views

HackerRank woman codesprint: minimum cost

java c# performance programming-challenge linq

Dec 28 '16 at 12:33 Community♦ 1

2

4

votes

1

answer

583

views

HackerRank NCR codesprint: Spiral Message

c# algorithm programming-challenge matrix

Mar 23 at 19:54 Wilfred David 1

4

votes

1

answer

461

views

Leetcode 125. Valid Palindrome

c# algorithm strings programming-challenge palindrome

Mar 10 '17 at 5:53 paparazzo 5,880

1

4

votes

1

answer

2k

views

Hackerrank: KnightL on a Chessboard

c# object-oriented programming-challenge breadth-first-search chess

Mar 8 '17 at 4:18 Community♦ 1

4

votes

1

answer

825

views

Hackerrank: Lucky Number Eight (Dynamic Programming)

c# algorithm programming-challenge dynamic-programming

Mar 7 '17 at 23:42 Community♦ 1

1

4

votes

1

answer

443

views

Hackerrank: Prefix neighbors

c# performance algorithm programming-challenge trie

Feb 14 '17 at 15:32 Peter Taylor 23.7k

3

votes

1

answer

556

views

Ternary tree preoder traversal (recursive implementation)

c# programming-challenge recursion tree depth-first-search

Aug 25 '19 at 20:39 dfhwze 13.6k

3

votes

1

answer

1k

views

Four sum algorithm mock interview practice

c# algorithm interview-questions

May 1 '18 at 17:39 Jianmin Chen 2,366

1

3

votes

0

answers

545

views

Hackerrank: Sherlock and anagram (optimal time complexity)

c# performance strings programming-challenge dynamic-programming

Mar 7 '17 at 5:21 Jianmin Chen 2,366

3

votes

0

answers

1k

views

Hackerrank: Sherlock and anagram

c# algorithm strings programming-challenge

Jan 25 '17 at 0:39 Community♦ 1

1

3

votes

1

answer

962

views

Find kth largest element in the union of two sorted array

c# algorithm programming-challenge binary-search

Jan 8 '17 at 19:59 C Smith 113

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45 Questions

Leetcode 15. 3 Sum

Hackerrank Queen's Attack II

Leetcode 56: Merge Intervals

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

Hackerrank - value of friendship (II)

Hackerrank: Kindergarten Adventures

Leetcode 125. Valid Palindrome (better performance?)

Leetcode 54: Spiral Matrix

Leetcode 17. Letter Combinations of a Phone Number

Recursive function challenge

Sudoku solver recursive solution with clear structure

Use Infix expression to construct a binary expression tree

Hackerrank - Maximum Disjoint Subtree Product

Longest Arithmetic Progression Algorithm

Find the smallest substring that contains some given subset of characters

LINQ and string.Split do it yourself practice

Hackerrank: Gridland Metro

Hackerank - value of friendship

HackerEarth - SimpleFunction

HackerRank woman codesprint: minimum cost

HackerRank NCR codesprint: Spiral Message

Leetcode 125. Valid Palindrome

Hackerrank: KnightL on a Chessboard

Hackerrank: Lucky Number Eight (Dynamic Programming)

Hackerrank: Prefix neighbors

Ternary tree preoder traversal (recursive implementation)

Four sum algorithm mock interview practice

Hackerrank: Sherlock and anagram (optimal time complexity)

Hackerrank: Sherlock and anagram

Find kth largest element in the union of two sorted array