Prepare for the uber online assessment test questions for the post of uber senior software engineer by practicing problems on CodeStudio.

Problem Title

Difficulty

Avg Time to solve

Attempted

Implementation: HashMap NEW

59

Easy

30 mins

3499

Find Number Of Islands NEW

25

Moderate

34 mins

677

Smallest Subarray With K Distinct Elements NEW

36

Easy

20 mins

1735

Implement Trie NEW

44

Hard

41 mins

1632

LRU Cache Implementation NEW

21

Moderate

25 mins

853

Valid Sudoku NEW

153

Moderate

40 mins

1068

Longest Consecutive Sequence NEW

48

Moderate

40 mins

3955

Right View NEW

8

Moderate

35 mins

914

Distinct Subsequences NEW

21

Moderate

10 mins

908

Execution Time NEW

3

Moderate

15 mins

152

House Robber II NEW

21

Moderate

15 mins

3997

Algorithm to find best insert position in sorted array NEW

13

Easy

10 mins

1921

Print Nodes at Distance K From a Given Node NEW

5

Hard

20 mins

349

Next Permutation NEW

42

Moderate

15 mins

2365

Serialize/Deserialize The Binary Tree NEW

13

Hard

15 mins

239

Deepest Left NEW

3

Moderate

15 mins

135

Add One to Linked List NEW

7

Easy

10 mins

228

Bipartite Graph NEW

28

Moderate

50 mins

586

Check N numbers NEW

2

Moderate

10 mins

34

Squares of a Sorted Array NEW

16

Easy

15 mins

584

Settle Debt NEW

3

Hard

20 mins

67

Binary Tree Cameras NEW

9

Hard

50 mins

115

Search In A 2D Matrix NEW

12

Easy

10 mins

1550

Combination Sum NEW

8

Easy

15 mins

562

Roman Numeral To Integer NEW

11

Easy

15 mins

406

Implementation: HashMap NEW

Easy

59 upvotes

Find Number Of Islands NEW

Moderate

25 upvotes

Smallest Subarray With K Distinct Elements NEW

Easy

36 upvotes

Implement Trie NEW

Hard

44 upvotes

LRU Cache Implementation NEW

Moderate

21 upvotes

Valid Sudoku NEW

Moderate

153 upvotes

Longest Consecutive Sequence NEW

Moderate

48 upvotes

Right View NEW

Moderate

8 upvotes

Distinct Subsequences NEW

Moderate

21 upvotes

Execution Time NEW

Moderate

3 upvotes

House Robber II NEW

Moderate

21 upvotes

Algorithm to find best insert position in sorted array NEW

Easy

13 upvotes

Print Nodes at Distance K From a Given Node NEW

Hard

5 upvotes

Next Permutation NEW

Moderate

42 upvotes

Serialize/Deserialize The Binary Tree NEW

Hard

13 upvotes

Deepest Left NEW

Moderate

3 upvotes

Add One to Linked List NEW

Easy

7 upvotes

Bipartite Graph NEW

Moderate

28 upvotes

Check N numbers NEW

Moderate

2 upvotes

Squares of a Sorted Array NEW

Easy

16 upvotes

Settle Debt NEW

Hard

3 upvotes

Binary Tree Cameras NEW

Hard

9 upvotes

Search In A 2D Matrix NEW

Easy

12 upvotes

Combination Sum NEW

Easy

8 upvotes

Roman Numeral To Integer NEW

Easy

11 upvotes

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