- Odd or Even
- Greatest of three numbers
- Area of Rectange, Right Angled Triangle and Circle
- Print table
- Sum of an AP
- nPr
- Check if a number is Perfect Square
- Immediate Smaller Element
- Student record
- Check if a number is power of another number
- Sum of all prime numbers between 1 and N.
- Palindrome
- Equal to product
- Maximum distance
- Check if given four points form a square
- Maximum Possible Sum of Products
- 12 hour clock addition
- The Lazy Caterer’s Problem
- Mean
- Number of divisors
- Row with minimum number of 1's
- Binary Search
- Print all possible strings
- Replace all ‘0’ with ‘5’ in an input Integer

Name

NANNABATTUNI NAGA SAI KRISHNA

Institution

IIT(ISM) DHANBAD

Coding Score

761

Problems Solved

370

Overall Rank: 289

Monthly Rank: 92031

Weekly Rank: 129956

- Reverse an Array
- Frequency of Array Elements
- Factorial
- Palindrome String
- Armstrong Numbers
- LCM And GCD
- Searching a number
- Power of 2
- Sort The Array
- Binary number to decimal number
- Nth Fibonacci Number
- Sort a String
- Print the Kth Digit
- Sieve of Eratosthenes
- Count possible triangles
- Rotate Array by n elements
- Permutations of a given string
- Missing number in array
- Array of alternate +ve and -ve no.s
- Swap two nibbles in a byte
- Maximum product of two numbers
- Remove Spaces
- Value equal to index value
- Number of paths
- Boolean Matrix Problem
- Bit Difference
- Reverse sub array
- Max Sum without Adjacents
- Swap kth elements
- Intersection of two arrays
- Union of two arrays
- Remove character
- Number of occurrence
- k largest elements
- Minimum difference pair
- Leaders in an array
- Find position of set bit
- Sum of Digits Divisibility
- Possible groups
- Ways To Tile A Floor
- Shortest direction
- Find the Odd Occurence
- Angle between hour and minute hand
- Keypad typing
- Missing ranges of numbers
- Total count
- Sum of primes
- Minimize string value
- Rotate by 90 degree
- Set Bits
- Count Squares
- Nth Even Fibonacci Number
- Chocolate Distribution Problem
- Check if a number can be expressed as x^y
- Find first and last occurrence of x
- Type of array
- Sum of dependencies in a graph
- Sort in specific order
- Check if two arrays are equal or not
- Find first set bit
- Geek and Coffee Shop
- Index of first 1 in a sorted array of 0’s and 1’s
- Does array represent Heap
- Last index of One
- Arranging the array
- Common elements
- Fill array with 1's
- Uncommon characters
- Four Elements
- Count the elements
- Pair cube count
- Check set bits
- Difficulty of sentence
- Twice counter
- Longest Common Prefix in an Array
- Remaining String
- Maximum number of zeroes
- Find the Highest number
- Closest Number
- Positive and negative elements
- Sum of two large numbers
- Remove common characters and concatenate
- Left Rotate Matrix K times
- Find k-th character in string
- Count Leaves in Binary Tree
- Merge Sort
- Quick Sort
- Mirror Tree
- Two Mirror Trees
- Height of Binary Tree
- Heap Sort
- Finding middle element in a linked list
- Circular Linked List
- Sum Tree
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Square root
- Print all nodes that don’t have sibling
- Run Length Encoding
- Remove duplicate elements from sorted Array
- Replace all 0's with 5
- Equilibrium index of an array
- Implement strstr
- Search a node in BST
- Implement Atoi
- Minimum distance between two numbers
- Multiply Matrices
- Count distinct elements in every window
- Find triplets with zero sum
- Level order traversal
- Linked List Insertion
- Root to Leaf Paths
- Anagram of String
- Triplet Family

- Anagram
- Pattern Searching
- Search in a Rotated Array
- Parenthesis Checker
- Merge Two Sorted Arrays
- Trailing zeroes in factorial
- Non Repeating Character
- GCD of Array
- Sum of Middle Elements of two sorted arrays
- First Repeating Element
- Reverse words in a given string
- Pythagorean Triplet
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Activity Selection
- Doubling the value
- Majority Element
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Subset Sum Problem
- Two numbers with sum closest to zero
- Number of Coins
- Stock buy and sell
- Next greater number set digits
- Possible words from Phone digits
- Longest Distinct characters in string
- Column name from a given column number
- Maximum of all subarrays of size k
- Remove Duplicates
- Maximum sum increasing subsequence
- Array to BST
- Sum of two numbers represented as arrays
- Key Pair
- Inversion of array
- Maximum Difference
- Product array puzzle
- Reverse Bits
- Reach the Nth point
- Subarray with given sum
- Stock span problem
- Max rope cutting
- Save Knights
- Copy Set Bits in Range
- Possible paths
- Minimum element in a sorted and rotated array
- Search in a matrix
- 0 - 1 Knapsack Problem
- Digit multiplier
- Next larger element
- Equilibrium point
- Floor in a Sorted Array
- Flip Bits
- Finding the numbers
- Binary Tree K level sum
- Exit Point in a Matrix
- 1[0]1 Pattern Count
- Gold Mine Problem
- Find Nth root of M
- Find all pairs with a given sum
- Numbers with same first and last digit
- Find the element that appears once in sorted array
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Element with left side smaller and right side greater
- Smallest Positive missing number
- Count all possible paths from top left to bottom right
- Money Division
- Minimum number of deletions and insertions.
- Stickler Thief
- Sum of Lengths of Non-Overlapping SubArrays
- Common Subsequence
- Star elements
- Pairs with Positive Negative values
- Numbers containing 1, 2 and 3
- Reverse a linked list
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list by swapping data
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Rearrange a linked list
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Sorted insert for circular linked list
- Split a Circular Linked List into two halves
- Insertion Sort
- Right View of Binary Tree
- K distance from root
- Maximum Width of Tree
- Delete without head pointer
- 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
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- 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
- Depth First Traversal for a Graph
- Boundary Traversal of binary tree
- Insert a node in a BST
- BFS traversal of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Print BST elements in given range
- The Celebrity Problem
- Largest subarray with 0 sum
- Print a Binary Tree in Vertical Order
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Find nth element of spiral matrix
- Max sum in the configuration
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Remove every k'th node
- Match specific pattern
- Sorted subsequence of size 3
- Expression Tree
- Check if Linked List is Palindrome
- Delete a Node in Single Linked List
- Kth largest element in BST
- Multiply two polynomials II
- Special Stack
- Three way partitioning
- Print Nodes having K leaves
- Sort a stack
- Peak element
- Index Of an Extra Element
- Merge Sort for Linked List
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Maximum path sum
- Modify Linked List-1
- Symmetric Tree
- Vertical sum
- Check if Tree is Isomorphic
- Leaves to DLL
- Find length of Loop
- Height of Spiral Tree

- Kadane's Algorithm
- Find Missing And Repeating
- Excel Sheet | Part - 1
- Maximum Sub Array
- Wave Array
- Binary String
- Longest Increasing Subsequence
- Longest Common Subsequence
- Minimum number of jumps
- Count ways to reach the n’th stair
- Edit Distance
- nCr
- Consecutive 1's not allowed
- Longest Even Length Substring
- Path in Matrix
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Relative Sorting
- Minimum Cost of ropes
- Longest consecutive subsequence
- Is Binary Number Multiple of 3
- Longest Arithmetic Progression
- Triplet Sum in Array
- Total Decoding Messages
- Unique BST's
- Word Break
- K’th smallest element
- Longest Common Substring
- Shortest Source to Destination Path
- Word Boggle
- Check Mirror in N-ary tree
- First non-repeating character in a stream
- Water Overflow
- Perfect Sum Problem
- Count possible ways to construct buildings
- Two water Jug problem
- Delete nodes having greater value on right
- Count BST nodes that lie in a given range
- Check for BST
- Bottom View of Binary Tree
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Delete a node from BST
- Detect cycle in a directed graph
- Detect cycle in an undirected graph
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Operations on Binary Min Heap
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- Circular tour
- Make Binary Tree
- Extreme nodes in alternate order
- Remove loop in Linked List
- Max length chain
- Largest BST
- Rat in a Maze Problem
- Find the Closest Element in BST
- Delete keys in a Linked list
- Top View of Binary Tree
- Polynomial Addition
- Inorder Successor in BST
- Leftmost and rightmost nodes of binary tree