Problems

# Status Problem Level Completes Likes
1

Duplicate even elements in an array

Beginner % 1
2

Find the number of pairs with odd XOR

Beginner % 1
3

Count number of pairs in an array with sum = K

Medium % 0
4

Count similar words in a given array

Beginner % 0
5

Find the Number of Contiguous Parking Areas

Medium % 0
6

The largest number can be formed from the given number

Beginner % 0
8

Maximum meetings in one room

Medium % 0
9

Check if given sudoku is valid or not

Medium % 0
10

Construct the Largest number from the given digits

Beginner % 1
11

Efficient Robot Problem - Find Minimum Trips

Hard % 0
12

Given an array, count the number of pairs with a given sum.

Beginner % 0
13

Two Sum Problem

Beginner % 0
14

Find if any two intervals overlap in given intervals

Medium % 1
15

Find all subsets of size K from a given number N (1 to N)

Medium % 0
16

Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed

Medium % 0
17

Insert a node in the given sorted linked list.

Beginner % 0
18

Construct the largest number from the given array.

Medium % 0
19

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Medium % 0
20

Activity Selection Problem

Medium % 0
21

Find the sum of overlapping elements in two sets

Beginner % 0
22

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Medium % 0
23

Given an array, Print sum of all subsets

Beginner % 0
24

Lexicographically previous permutation With One swap

Medium % 0
25

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Medium % 0
26

Check the completeness of given binary tree | Set 1 - Using Node Count

Medium % 0
27

Check if the given binary tree is Full or not.

Beginner % 0
29

Maximum number edges to make Acyclic Undirected/Directed Graph

Beginner % 0
30

Evaluation of Prefix Expressions (Polish Notation) | Set 2

Medium % 0
31

ZigZag OR Diagonal traversal in 2d array/Matrix using queue

Medium % 0
32

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Medium % 0
33

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2

Medium % 0
34

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 1

Medium % 0
35

Find all the numbers in the range which has prime set bits.

Beginner % 0

Duplicate even elements in an array

Find the number of pairs with odd XOR

Count number of pairs in an array with sum = K

Count similar words in a given array

Find the Number of Contiguous Parking Areas

The largest number can be formed from the given number

Maximum meetings in one room

Check if given sudoku is valid or not

Construct the Largest number from the given digits

Efficient Robot Problem - Find Minimum Trips

Given an array, count the number of pairs with a given sum.

Two Sum Problem

Find if any two intervals overlap in given intervals

Find all subsets of size K from a given number N (1 to N)

Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed

Insert a node in the given sorted linked list.

Construct the largest number from the given array.

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Activity Selection Problem

Find the sum of overlapping elements in two sets

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Given an array, Print sum of all subsets

Lexicographically previous permutation With One swap

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Check the completeness of given binary tree | Set 1 - Using Node Count

Check if the given binary tree is Full or not.

Maximum number edges to make Acyclic Undirected/Directed Graph

Evaluation of Prefix Expressions (Polish Notation) | Set 2

ZigZag OR Diagonal traversal in 2d array/Matrix using queue

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 1

Find all the numbers in the range which has prime set bits.