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SCHOOL (0)
BASIC (174)
EASY (112)
MEDIUM (51)
HARD (0)
Sort a linked list of 0s, 1s and 2s
Detect Loop in linked list
Delete without head pointer
Intersection in Y Shaped Lists
Merge two sorted linked lists
Implement stack using array
Largest subarray with 0 sum
Validate an IP Address
Remove loop in Linked List
Minimum Swaps to Sort
Palindrome Linked List
Peak element
Union of Two Linked Lists
Cat and Hat
Reverse array in groups
Smallest Positive Missing
Power Of Numbers
Rearrange Array Alternately
Rotate Array
Kadane's Algorithm
Majority Element
Union of 2 Sorted Arrays
Indexes of Subarray Sum
Spirally traversing a matrix
Sort Elements by Decreasing Frequency
Next Greater Element
Minimum Cost of ropes
Sum of all substrings of a number
Kth Smallest
Top K Frequent in Array
4 Sum - All Quadruples
Sort 0s, 1s and 2s
Sum of Middle elements of two sorted arrays
Single Among Doubles in a Sorted
Search in Rotated Sorted Array
Form the Largest Number
Maximum Product Subarray
Longest Subarray with Sum K
Next Smaller Element
Sum of two large numbers
K-th element of two Arrays
First and Last Occurrences
Permutations of a String
Reverse Spiral Form of Matrix
Recursively Remove Adjacent Duplicates
Subset Sum Problem
Minimum XOR value pair
Overlapping Intervals
Majority Element - More Than n/3
Minimum Time
Split It Up
Reverse a linked list
Right View of Binary Tree
Height of Binary Tree
Balanced Tree Check
Kth from End of Linked List
Middle of a Linked List
Left View of Binary Tree
Find Transition Point
Remove Duplicates from a Sorted Linked List
Level Order in spiral form
Identical Trees
Square Root
Binary Search
Remove Duplicates Sorted Array
Odd even level difference
Toeplitz matrix
Third largest element
Multiply two linked lists
Count Occurrence of digit k
Array Duplicates
Intersection of Two Linked Lists
Symmetric Tree
Consonants and Vowels check
Reverse an Array
Decimal to binary
Check K-th Bit
Power of 2
Frequencies in a Limited Array
Equilibrium Point
Array Leaders
Floor in a Sorted Array
Roof Top
Check if a string is Isogram or not
Anagram
String Rotated by 2 Places
Isomorphic Strings
Most Frequent Character
Reverse Words
Sum of numbers in string
Minimum indexed character
Panagram Checking
Non Repeating Character
Parenthesis Checker
Generate Binary Numbers
First Repeating Element
Union of Arrays with Duplicates
Common Elements
Check Equal Arrays
Numbers containing 1, 2 and 3
Missing in Array
Roman Number to Integer
Intersection of Arrays with Distinct
Max Value Permutation
Missing And Repeating
Find Index
Professor and Parties
Common in 3 Sorted Arrays
Maximum no of 1's row
Move All Zeroes to End
Minimize the sum of product
Chocolate Distribution Problem
Count the triplets
Find Pair Given Difference
Fascinating Number
Single Number
Count increasing Subarrays
Remove Consecutive Characters
Rearrange a string
Remove Duplicates
Compete the skills
Sorting Employees
Facing the sun
Second Largest
Two Sum - Pair with Given Sum
Find all pairs with a given sum
Number of occurrence
Average of Prefix
Find the left over element
Check if array is sorted
Find missing in second array
First Repeated Character
Two sum -Pairs with 0 Sum
At Least K Occurrences
Count the Zeros
Total distance travelled in an array
Java Arrays | Set 1
First and Second Smallests
Palindrome String
Total count
Unique DigitSum
Common Subsequence OldP
Divisibility by 8
Adding Array Elements
Number of 1 Bits
Armstrong Numbers
Max Sum Subarray of size K
Nth Fibonacci Number
Number of factors
Count Digits
Sum Of Digits
Palindrome
Prime Number
Maximum Sum Problem
Happy Number
Perfect Numbers
Maximize Toys
Largest number possible
Series GP
Arithmetic Number
Even and Odd
Distribute Balls
Union of Two Sorted Arrays with Distinct Elements
Check for Binary String
Count Leaves in Binary Tree
Add two fractions
Replace all 0's with 5
Print number pattern
First Occurence
Remainder with 7
Palindromic Array
Multiply Matrices
Increment a variable
C++ Functions (Sum of numbers) | Set 1
Anagram of String
Triplet Family
Alternates in an Array
Java Inheritance
Java Abstract keyword
Java Override
Java Classes Introduction
Count Odd and Even
Print 1 To N Without Loop
Array Search
Sorted Array Search
Remove common characters and concatenate
Reverse a String
First n Fibonacci
Palindrome Array
Multiply Array
Sum of Array
Sum of Natural Numbers
Searching in an Array
Count pair sum
Print Elements of Array
Remove consonants from a string
At least two greater elements
Sort a String
Anagram Palindrome
Check if divisible by 4
Change the string
Value equal to index value
Check for subsequence
Check String
Convert a list of characters into a String
Remove characters from alphanumeric string
Odd to Even
Count of camel case characters
Remove vowels from string
Maximum triplet sum in array
The problem of identical arrays
Reverse sub array
Count the characters
Count type of Characters
Uncommon characters
Sum of all sub-sequences of a number
Swap kth elements
Reversing the vowels
Extract the integers
Lower case to upper case
Smaller and Larger
Remove Spaces
Repeated Character
Length of Last word
Display longest name
Find element at a given Index
Last index of One
Upper Case Conversion
Sort the string in descending order
Front-Back Transformation - copy
Merge two strings
String with numbers at its end
Largest Element in Array
Rotate Array by One
One odd Occuring
Ishaan Loves Chocolates
Split Strings
Array Subset
Wrong Ball
Product is even or odd?
Find Substring from last of the Given String
C++ Strings
Count of smaller elements
Min and Max in Array
Pattern of Strings
Print first letter of every word in the string
Last index of a character in the string
Good or Bad string
Remove character
Convert String to LowerCase
Anagram Strings
Triangle shrinking downwards
Program to print reciprocal of letters
Delete alternate characters
Reverse a String
Java Strings | Set 1
Sort the fest
Java Substring
GCD of two numbers
C++ if-else (Decision Making)
Addition of Two Numbers
C++ Input / Output
1s Complement
Odd or Even
C++ Operators (Relational) | Set 2
C++ Switch Case Statement
Number of Diagonals
C++ Operators | Set 1 (Arithmetic)
Check an Integer is power of 3 or not
Binary representation
Even Odd Sum
Set kth bit
Vowel or Not
Decision Making in Java
Combinational Logic
Java Hello World
Java Input/Output
Java loops | Set 1
Full Prime
LCM And GCD
Small Factorial
Mean of an Array
Cube root of a number
Repeated IDs
C++ Data Types
Find n-th term of series 1, 3, 6, 10, 15, 21
Leap Year
Median of an Array
Factorial
Automorphic Number
Sum of odd and even elements
Number of divisors
Sum of Digit is Palindrome or not
Perfect Number
Sum of an AP
Greatest of three numbers
Sum of AP series
Sum of GP
Simple Interest
Reverse digits
Power of Pow | Even Number
Power of Pow | Odd Numbers
Java Operators(Relational) | Set - 2
Check if two given circles touch each other
Series AP
Floyd's triangle
Distance between 2 points
Area of Rectangle, Right Angled Triangle and Circle
Sum of elements in a matrix
Identical Matrices
Find difference between sum of diagonals
Sum of first n terms
C++ 2-D Arrays | Set-1
Compound Interest
Multiplication Table
The dice problem
Java Basic Data Types
Remainder Evaluation
Pattern Printing
Print 1 to n without using loops
Count Squares
Swap two numbers
Number Pattern
12 hour clock Multiplication
12 hour clock addition
12 hour clock subtraction
Decimal to any base conversion
Sum Palindrome
Surface Area and Volume of Cuboid
nPr
Determine focal length of a spherical mirror
Parallel or Perpendicular?
Addition of two square matrices
Diagonal sum
Java Operators(Arithmetic) | Set 1
Java Switch Case statement
Time to Words
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