Problems

# Status Problem Level Completes Likes
2

Find two elements whose sum is closest to zero

Medium % 0
3

Find the element which appears maximum number of times in the array.

Medium % 0
4

Find duplicates in an given array in O(n) time and O(1) extra space.

Medium % 0
5

Find the last non repeating character in a given string.

Beginner % 0
6

Find the last repeating character in a given string.

Beginner % 0
7

The Word Break Problem

Hard % 0
8

Find Whether Two Strings are Permutation of each other

Beginner % 1
9

Hash Table Implementation

Beginner % 0

Find two elements whose sum is closest to zero

Find the element which appears maximum number of times in the array.

Find duplicates in an given array in O(n) time and O(1) extra space.

Find the last non repeating character in a given string.

Find the last repeating character in a given string.

The Word Break Problem

Find Whether Two Strings are Permutation of each other

Hash Table Implementation