- Sum of array elements
- Reverse an Array
- Maximum and Minimum Of Array Elements
- Sum Of Digits
- Pascal Triangle
- Alone in couple
- Sum of Array
- Odd or Even
- Palindrome String
- Armstrong Numbers
- Series AP
- Print Elements of Array
- Binary number to decimal number
- Print table
- Sum of Digit is Pallindrome or not
- nPr
- Second Largest
- Reverse digits
- Binary representation
- Check if an array is sorted
- Diagonal sum
- Find difference between sum of diagonals
- Sum of elements in a matrix
- Reversing the vowels
- Reverse a String
- GCD of two numbers
- Largest Element in Array
- Addition of two square matrices
- Identical Matrices
- Count of smaller elements
- Find Index
- Decimal to binary
- Sum of diagonals
- Upper case conversion
- The dice problem
- Find n-th term of series 1, 3, 6, 10, 15, 21
- Print the pattern | Set-1
- Toeplitz matrix
- Print alternate elements of an array

Name

codechaser

Rank in Institute

#3

Courses Attended

Overall Coding Score: 812

Monthly Coding Score: 561

Weekly Coding Score: 4

- Search an Element in an array
- Binary String
- Factorial
- Prime Number
- GCD of Array
- Searching a number
- Power of 2
- Series GP
- Pythagorean Triplet
- Print the Kth Digit
- Doubling the value
- Majority Element
- Sieve of Eratosthenes
- Rotate Array
- Permutations of a given string
- Missing number in array
- Swap two nibbles in a byte
- Count total set bits
- Bit Difference
- Count numbers containing 4
- Greater on right side
- Immediate Smaller Element
- Sum of distinct elements
- Binary Array Sorting
- Convert array into Zig-Zag fashion
- Remove character
- Number of occurrence
- Check if a number is power of another number
- Sum of all prime numbers between 1 and N.
- Ways To Tile A Floor
- Generate Binary Numbers
- Find the Odd Occurence
- Rotating an Array
- Rotate by 90 degree
- Reverse array in groups
- Set Bits
- Count Squares
- Padovan Sequence
- Minimize the sum of product
- Missing number
- Squares in a Matrix
- Sort in specific order
- Check if two arrays are equal or not
- Maximum sum of hour glass
- Find first set bit
- Check for subsequence
- Find first repeated character
- Does array represent Heap
- Find the element that appears once in sorted array
- Last index of One
- Cyclically rotate an array by one
- Print an array in Pendulum Arrangement
- Transpose of Matrix
- First element to occur k times
- Extract Maximum
- Uncommon characters
- Find minimum and maximum element in an array
- Find second largest element
- Count pair sum
- Balanced Array
- Max Sum Subarray of size K
- Check if a string is Isogram or not
- Sort the Half Sorted
- Alternative Sorting
- Twice counter
- Longest Common Prefix in an Array
- Print first n Fibonacci Numbers
- Remove repeated digits in a given number
- Sum of distinct elements for a limited range
- Print Matrix in snake Pattern
- Anagram Palindrome
- Closest Number
- Absolute Difference of 1
- Swapping Triangles
- Sum of upper and lower triangles
- Left Rotate Matrix K times
- Merge two strings
- Difference between highest and lowest occurrence
- Minimum product pair
- Find unique element
- Find the fine
- Maximize âˆ‘arr[i]*i of an Array
- Sort the string in descending order
- Count number of elements between two given elements in array
- Find the closest number
- Make Co-prime Array
- Maximum triplet sum in array
- Check if the number is balanced
- Most frequent word in an array of strings
- Check if strings are rotations of each other or not
- Making elements distinct
- Last duplicate element in a sorted array
- Why is Melody so chocolaty?
- Tywin's War Strategy
- Ishaan Loves Chocolates
- Jay's Apples
- Reducing Walls
- Multiply left and right array sum.
- Maximum Perimeter of Triangle from array
- Fibonacci to N
- Average Count Array
- Tower of Hanoi
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Delete node in Doubly Linked List
- Size of Binary Tree
- Inorder Traversal
- Bubble Sort
- Count Leaves in Binary Tree
- Selection Sort
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using array
- Square root
- Insert a node in Doubly linked list
- Binary Search
- Remove duplicate elements from sorted Array
- Count zeros in a sorted matrix
- Preorder Traversal
- Implement strstr
- Search a node in BST
- Implement Atoi
- Find Number of Numbers
- Minimum distance between two numbers
- Find triplets with zero sum
- Minimum element in BST
- Anagram of String
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Find n/k th node in Linked list
- Maximum in Struct Array
- Queue Reversal
- Triplet Family
- Sum of Binary Tree
- Insert in Middle of Linked List
- Pairwise Consecutive Elements
- Count Non-Leaf Nodes in Tree
- Product of array elements

- Frequencies of Limited Range Array Elements
- Anagram
- Number of Unique Paths
- Wave Array
- Print Pattern
- Search in a Rotated Array
- Trailing zeroes in factorial
- Non Repeating Character
- Sum of Middle Elements of two sorted arrays
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Equal Sum and Product
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Maximum value in a bitonic array
- Single Number
- Segregate even and odd nodes in a Linked List
- Count increasing Subarrays
- Longest Distinct characters in string
- Count distinct pairs with difference k
- N meetings in one room
- Remove Duplicates
- Maximum sum increasing subsequence
- Array to BST
- Facing the sun
- Triangular Number
- Key Pair
- Add Binary Strings
- Product array puzzle
- Reverse Bits
- Subarray with given sum
- Leaders in an array
- Swap all odd and even bits
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Segregate 0s and 1s
- Triplet Sum in Array
- Reach a given score
- Search in a matrix
- Number Of Open Doors
- Day of the week
- Missing element of AP
- Count the Zeros
- 0 - 1 Knapsack Problem
- Find the number of sub-arrays having even sum
- Skip the work
- Valid Substring
- Count the Reversals
- Next larger element
- Perfect Numbers
- The Nth Fibonnaci
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- 3 Divisors
- Lucas Number
- Min sum formed by digits
- String Manipulation
- Chocolate Distribution Problem
- Flood fill Algorithm
- Maximum no of 1's row
- Friends Pairing Problem
- Max sum in sub-arrays
- Gold Mine Problem
- Sum of all substrings of a number
- Minimum Operations
- Find all pairs with a given sum
- Check if frequencies can be equal
- Largest Fibonacci Subsequence
- Fractional Knapsack
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Common elements
- Rod Cutting
- Array Subset of another array
- First negative integer in every window of size k
- Length of longest subarray
- Four Elements
- Paths to reach origin
- Subarray with 0 sum
- Nth catalan number
- Sum equals to Sum
- Painting the Fence
- Minimum Number in a sorted rotated array
- Find distinct elements
- Maximum sum Problem
- Consecutive Array Elements
- Longest Repeating Subsequence
- Even Fibonacci Numbers Sum
- Maximum sum of subarray less than or equal to x
- Boundary Elements of Matrix
- Count the triplets
- Non-Repeating Element
- Last seen array element
- Closing bracket index
- Number of pairs with maximum sum
- Roof Top
- Pairs which are Divisible by 4
- Reorganize The Array
- Check if array contains contiguous integers with duplicates allowed
- Rearrange an array such that arr[i] = i
- Winner of an election
- Rope Cutting
- Ease the Array
- Amicable Pair
- Pair the minimum
- Easy string
- Count pairs Sum in matrices
- C++ Matrix Rotation by 180 degree
- Find the closest pair from two arrays
- The Inverting Factor
- Charul and vessels
- Print Bracket Number
- Palindromic Series
- Sorting all array elements except one
- Reaching the heights
- Delete array elements which are smaller than next or become smaller
- Lucky Ishaan
- Smallest greater elements in whole array
- Minimal moves to form a string
- Save Ironman
- Fitting The Array
- K-th missing element
- Pair with given sum in a sorted array
- Reverse a linked list
- Occurence of an integer in a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Rearrange a linked list
- Add 1 to a number represented as linked list
- linked list of strings forms a palindrome
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Reverse a Doubly Linked List
- Insertion Sort
- Merge Sort
- Quick Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Diameter of Binary Tree
- Check for Balanced Tree
- N
^{th}node from end of linked list - Left View of Binary Tree
- Delete Middle of Linked List
- Merge two sorted linked lists
- Sum Tree
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- Insert a node in a BST
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- Level order traversal Line by Line
- Print BST elements in given range
- Largest subarray with 0 sum
- Minimum Depth of a Binary Tree
- Odd even level difference
- Remove every k'th node
- Leaf at same level
- Multiply two linked lists
- Josephus problem
- Expression Tree
- Check if Linked List is Palindrome
- Max distance between same elements
- Longest Consecutive Subsequence
- Delete a Node in Single Linked List
- Kth largest element in BST
- Count distinct elements in every window
- Check if two strings are k-anagrams or not
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Level order traversal
- Peak element
- Index Of an Extra Element
- Sum of given range
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Ancestors in Binary Tree
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Root to Leaf Paths
- Max and min element in Binary Tree
- Perfect Binary Tree
- Reverse a string using Stack
- Full binary tree
- Symmetric Tree
- Count Pairs whose sum is equal to X
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Depth of node
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Reverse First K elements of Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Closest Neighbor in BST
- ZigZag Tree Traversal
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Count Odd Even
- Matrix Interchange

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Maximum Sub Array
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- Egg Dropping Puzzle
- Edit Distance
- nCr
- Longest Span with same Sum in two Binary arrays
- Consecutive 1's not allowed
- Trapping Rain Water
- Factorials of large numbers
- Stock buy and sell
- Maximum of all subarrays of size k
- Boolean Matrix Problem
- Sorting Elements of an Array by Frequency
- Form a palindrome
- Smallest number on left
- Stock span problem
- Convert an array to reduced form
- Handshakes
- Unique BST's
- Recursively remove all adjacent duplicates
- Trie | (Insert and Search)
- Largest prime factor
- Zero Sum Subarrays
- Infix to Postfix
- Largest Sum Subarray of Size at least K
- Longest Bitonic subsequence
- Job Sequencing Problem
- In First But Second
- Longest subarray with sum divisible by K
- Longest Sub-Array with Sum K
- Reverse a Linked List in groups of given size.
- Count BST nodes that lie in a given range
- Check for BST
- Delete without head pointer
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Connect Nodes at Same Level
- Diagonal Traversal of Binary Tree
- Boundary Traversal of binary tree
- Min distance between two given nodes of a Binary Tree
- The Celebrity Problem
- Check if subtree
- Remove loop in Linked List
- LRU Cache
- Construct expression tree
- Foldable Binary Tree