DSA Basic Level » The Coding Tracker

About Course

DSA basic course is very important for foundation of the Competitive Coding. This course cover how different data structures and algorithmic approaches helps to solve problems.

Course Content

Problems on Arrays

Find The Odd
Left Rotate an Array
Right Rotate an Array
Best Time to Buy and Sell Stock
Leaders In Array
Merge Two Sorted Array
Missing Number
Greater on Right Side of Array
Binary Search
Search in Rotated Array
Adding One
Sort Colors
Peak element

Problems on Strings

Two Pointers

Two Sum II – Input Array Is Sorted
Pair with given sum in a sorted array
Move all zeroes to end of array
Sort an array of 0s, 1s and 2s
Remove duplicate elements from sorted Array
Sum of two elements with sum nearest to zero
Triplet Sum in Array
Count the triplets
Valid Triangle Number
3Sum Closest

Problems on Hashing Part-1

Problems on Hashing Part-2

Maximum Repeating Number
Majority Element
Majority Element II
Find Lucky Integer
Most Frequent Even Element
Check Wether Two Strings are Almost Equal Strings
Uncommon Words from Two Sentences
Count Number of Pairs with Absolute Difference
Valid Anagram
Minimum Number of Steps to Make Two Strings Anagram
Minimum Number of Steps to Make Two Strings Anagram II
Find Common Characters
Intersection of Two Arrays II
Check if One String Swap Can Make Strings Equal
Longest Palindrome
Bulls and Cows
Rings and Rods
Maximum Number of Balls
Longest Palindrome by Concatenating Two Letter Words (Medium)
Group of People Given the Group Size they Belong to
Two Sum
Maximum Distance Between Same Elements
Contains Duplicate II
Clan Expansion
First Repeating Element

Problems on Maths

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About Course

What Will You Learn?

Course Content

Problems on Arrays

Find The Odd

Left Rotate an Array

Right Rotate an Array

Best Time to Buy and Sell Stock

Leaders In Array

Merge Two Sorted Array

Missing Number

Greater on Right Side of Array

Binary Search

Search in Rotated Array

Adding One

Sort Colors

Peak element

Problems on Strings

Reverse words in a given string

Check if strings are rotations of each other or not

Check Anagram

Maximum number of Words

Check Pangram

Reverse Words in a String III

Two Pointers

Two Sum II – Input Array Is Sorted

Pair with given sum in a sorted array

Move all zeroes to end of array

Sort an array of 0s, 1s and 2s

Remove duplicate elements from sorted Array

Sum of two elements with sum nearest to zero

Triplet Sum in Array

Count the triplets

Valid Triangle Number

3Sum Closest

Problems on Hashing Part-1

Union of Two Arrays

Intersaction of Two Arrays

Jewels and Stones

Key Pair

Equal to Product

Count the Number of Consistent Strings

Intersection of Multiple Arrays

Maximum Number of Words You Can type

Sum equals to sum

Problems on Hashing Part-2

Maximum Repeating Number

Majority Element

Majority Element II

Find Lucky Integer

Most Frequent Even Element

Check Wether Two Strings are Almost Equal Strings

Uncommon Words from Two Sentences

Count Number of Pairs with Absolute Difference

Valid Anagram

Minimum Number of Steps to Make Two Strings Anagram

Minimum Number of Steps to Make Two Strings Anagram II

Find Common Characters

Intersection of Two Arrays II

Check if One String Swap Can Make Strings Equal

Longest Palindrome

Bulls and Cows

Rings and Rods

Maximum Number of Balls

Longest Palindrome by Concatenating Two Letter Words (Medium)

Group of People Given the Group Size they Belong to

Two Sum

Maximum Distance Between Same Elements

Contains Duplicate II

Clan Expansion

First Repeating Element

Problems on Maths

Armstrong Number

Check Prime Number

Check Palindrome Number

Repetitive Addition Of Digits

Check Perfect Number

Sieve of Eratosthenes

Prime Factors

Product of Prime Factors