- Sum of array elements
- Search an Element in an array
- Immediate Smaller Element
- Binary Array Sorting
- Second Largest
- Palindrome
- Maximum money
- Check if string is rotated by two places
- Reverse a String
- Print an array in Pendulum Arrangement
- Check if a string is Isogram or not
- Decimal to binary
- Check String
- Remove repeated digits in a given number
- Change the string
- Row with minimum number of 1's
- Merge two strings
- Remove vowels from string
- Upper case conversion
- Snake Case
- Product of maximum in first array and minimum in second
- Multiply by 11
- Perfect Square String
- Multiply left and right array sum.
- Binary Search
- Minimum element in BST

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stevecooper

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Overall Coding Score: 1508

Problems Solved: 671

Monthly Coding Score: 641

Weekly Coding Score: 0

- Reverse an Array
- Frequency of Array Elements
- Maximum and Minimum Of Array Elements
- Maximum Occuring Character
- Binary String
- Factorial
- Sum of Array
- Palindrome String
- Armstrong Numbers
- Prime Number
- LCM And GCD
- Sum of Series
- Power of 2
- Sort The Array
- Binary number to decimal number
- Sort a String
- 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
- Value equal to index value
- Number of paths
- Boolean Matrix Problem
- Bit Difference
- Reverse sub array
- Count zero
- Sum of distinct elements
- Max Sum without Adjacents
- Swap kth elements
- Intersection of two arrays
- Union of two arrays
- Remove character
- Number of occurrence
- k largest elements
- Leaders in an array
- Sum of all prime numbers between 1 and N.
- Possible groups
- Ways To Tile A Floor
- Generate Binary Numbers
- Smallest number
- Find the Odd Occurence
- Angle between hour and minute hand
- Keypad typing
- Minimize string value
- Set Bits
- Subset Sums
- Minimize the sum of product
- Chocolate Distribution Problem
- Check if a number can be expressed as x^y
- Help a Thief!!!
- At least two greater elements
- Drive the car
- Find first and last occurrence of x
- Type of array
- Sort in specific order
- Check if two arrays are equal or not
- Unique Numbers
- Find first set bit
- Find first repeated character
- Geek and Coffee Shop
- Index of first 1 in a sorted array of 0’s and 1’s
- Last index of One
- Fill array with 1's
- Uncommon characters
- Minimum sum of two elements from two arrays
- Count of smaller elements
- Four Elements
- Count the elements
- Pair cube count
- Check set bits
- Sorting Employees
- Quick Left Rotation
- Twice counter
- Elements in the Range
- Remaining String
- Count triplets with sum smaller than X
- Maximum number of zeroes
- Odd to Even
- Minimum number of flipped bits
- Total number of Strings
- Find the Highest number
- Closest Number
- First and last occurrences of X
- Positive and negative elements
- Boolean String Value
- The Counting Game !!
- Remove common characters and concatenate
- Shortest un-ordered subarray
- Front-Back Transformation
- Left Rotate Matrix K times
- Count the characters
- Find k-th character in string
- Good or Bad string
- Repeated Character
- Red OR Green
- Sort String
- Make a string from another string
- Find the fine
- Rearrange string as alternate x and y occurences
- Sort the string in descending order
- Remove all characters other than alphabets
- Longest common prefix
- Sandwiched_Vowels
- Last index of a character in the string
- Check if the number is balanced
- Count the characters in each word in a given sentence
- Count number of equal pairs in a string
- Number of positive integral solutions
- Extract the phone number
- Product is even or odd?
- C++ Program to remove consonants from a string
- Check if actual binary representation of a number is palindrome
- Balanced string
- C++ Corresponding position in the two strings that hold exactly the same characters.
- Winner of an election where votes are represented as candidate names
- Most frequent word in an array of strings
- Crazy String
- Convert the string
- Ishaan Loves Chocolates
- The Non-repetitive String
- Riya's Test
- Maximum number of partitions that can be sorted individually to make sorted
- Anand's Maths question
- Strange Sort
- Minimum changes to make all substrings distinct
- Sorting all array elements except one
- Prime String
- K-th missing element
- Fibonacci to N
- Average Count Array
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Merge Sort
- Mirror Tree
- Two Mirror Trees
- Height of Binary Tree
- Heap Sort
- Finding middle element in a linked list
- Sum Tree
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Print all nodes that don’t have sibling
- Replace all 0's with 5
- Equilibrium index of an array
- Implement strstr
- C++ STL | Set 5 (queue)
- Implement Atoi
- Minimum distance between two numbers
- Multiply Matrices
- Find triplets with zero sum
- Level order traversal
- Linked List Insertion
- Insert in a Sorted List
- Ancestors in Binary Tree
- Root to Leaf Paths
- Anagram of String
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Merge Lists Alternatingly
- Find the Sum of Last N nodes of the Linked List
- Modular Node
- Find n/k th node in Linked list
- Queue Reversal
- Sum of Binary Tree
- Sum of Leaf Nodes
- Insert in Middle of Linked List
- Pairwise Consecutive Elements
- Count Non-Leaf Nodes in Tree

- Anagram
- Adding One
- Pascal Triangle
- Maximum Gap
- Pattern Searching
- Print Pattern
- Rotation
- Search in a Rotated Array
- Parenthesis Checker
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Palindrome numbers
- Merge Two Sorted Arrays
- Magic Number
- Maximize Toys
- Consecutive elements
- Maximize Number of 1's
- Non Repeating Character
- GCD of Array
- Repetitive Addition Of Digits
- Distinct Substrings
- Sum of Middle Elements of two sorted arrays
- 2's Complement
- Good Pairs
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Pythagorean Triplet
- Isomorphic Strings
- Count Substrings
- Check if a given string is a rotation of a palindrome
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Sum of Digit is Pallindrome or not
- Remove “b” and “ac” from a given string
- Strong Number
- Doubling the value
- Majority Element
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Pairs with difference k
- Amend The Sentence
- Subset Sum Problem
- Two numbers with sum closest to zero
- Number of Coins
- Finding Number
- Stock buy and sell
- Maximum value in a bitonic array
- Next greater number set digits
- Finding Position
- Jumping Numbers
- Amount of Water
- Single Number
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Column name from a given column number
- Maximum Product Subarray
- Maximum of all subarrays of size k
- Remove Duplicates
- Row with max 1s
- Kth distance
- Addition of submatrix
- Segregate Even and Odd numbers
- Maximum sum increasing subsequence
- Array to BST
- Facing the sun
- Greater on right side
- Convert array into Zig-Zag fashion
- Key Pair
- Product array puzzle
- Length Unsorted Subarray
- Reverse Bits
- Reach the Nth point
- Subarray with given sum
- Maximum repeating number
- Three Great Candidates
- Minimum element in a sorted and rotated array
- Search in a matrix
- Cross the Bridge
- Day of the week
- Chinky and diamonds
- Count the Zeros
- 0 - 1 Knapsack Problem
- Trail of ones
- The Prime Twins
- Valid Substring
- Count the Reversals
- Extract the Number from the String
- Maximum average subarray
- Next larger element
- Permutation with Spaces
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Finding Profession
- Max value
- Flip Bits
- Finding the numbers
- Min sum formed by digits
- String Manipulation
- Binary Tree K level sum
- Recursively remove all adjacent duplicates
- Exit Point in a Matrix
- Reverse each word in a given string
- 1[0]1 Pattern Count
- Flood fill Algorithm
- Pair with greatest product in array
- Decode the pattern
- Roman Number to Integer
- Maximum no of 1's row
- Decode the string
- Max sum in sub-arrays
- Smallest subarray with sum greater than x
- Game of XOR
- Equal point in a string of brackets
- Find all pairs with a given sum
- Palindromic patitioning
- Numbers with same first and last digit
- Find the element that appears once in sorted array
- Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Infix to Postfix
- Element with left side smaller and right side greater
- Array Subset of another array
- Smallest Positive missing number
- Longest Bitonic subsequence
- First negative integer in every window of size k
- Extract Maximum
- Paths to reach origin
- Max Circular Subarray Sum
- Group Anagrams Together
- Sum equals to Sum
- Find Pair Given Difference
- Second most repeated string in a sequence
- Sort the given array after applying the given equation
- Rotten Oranges
- Number of Groups
- Stickler Thief
- Maximum Product Cutting
- Even and odd elements at even and odd positions
- Find the most frequent digit
- Sum of Lengths of Non-Overlapping SubArrays
- Chocolate Station
- Common Subsequence
- Star elements
- Min Manipulations to make Strings Anagram
- Three consecutive duplicates
- Smallest number in one swap
- Sum of two large numbers
- Largest number in one swap
- Find the minimum time
- Find the position
- Prime number of set bits
- Divisible by 7
- Reversing the equation
- Pairs with Positive Negative values
- Convertible string
- Numbers containing 1, 2 and 3
- Maximum number of characters between any two same character
- Winner of an election
- Count of substrings containing K ones
- Missing Intervals
- Closing bracket index
- Floating point number even or odd
- Swap the closest and farthest digits
- Nearest multiple of 10
- Remove leading zeros from an IP address
- Add two numbers represented by two arrays
- Longest sub-string having frequency of each char less than integer k
- The invariable units digit
- Word with maximum frequency
- Check if array contains contiguous integers with duplicates allowed
- Even Decimal Binary String
- C++ Basic Data types
- Cosmic Number
- Maximum height of the staircase
- C++ Alternate words in reverse order.
- Ease the Array
- Maximize permutations
- Pair the minimum
- Count ways to express N as the sum of 1,3 and 4
- String Modification
- Easy string
- Sum of all sub-sequences of a number
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Ishaan and Sticks
- Find the closest pair from two arrays
- The Inverting Factor
- Longest substring with equal number of 0s and 1s
- Program for length of the longest word in a sentence
- Charul and vessels
- Print Bracket Number
- Cutting Binary String
- The Even Array
- Shoot, Reload, Repeat
- Palindromic Series
- The Modified String
- Check if any valid sequence is divisible by M
- Confused pappu
- Reaching the heights
- Delete array elements which are smaller than next or become smaller
- Reducing Walls
- Lucky Ishaan
- Find the Number which contain the digit d
- Minimal moves to form a string
- Program to print reciprocal of letters
- Ways to split string such that each partition starts with distinct letter
- Save Ironman
- Find The Sequence
- Are you "Perfect"
- Reverse a linked list
- Occurence of an integer in 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
- 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
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- Rearrange linked list in-place
- Remove duplicates from an unsorted 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
- Decimal Equivalent of Binary Linked List
- 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
- Boundary Traversal of binary tree
- Reverse alternate levels of a perfect binary tree
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Postorder traversal from given Inorder and Preorder traversals
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Level order traversal Line by Line
- Print BST elements in given range
- Print a Binary Tree in Vertical Order
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Remove every k'th node
- Leaf at same level
- Validate an IP Address
- Multiply two linked lists
- Expression Tree
- Maximum Difference
- Check if Linked List is Palindrome
- Delete a Node in Single Linked List
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Inorder Successor in BST
- Merge Sort for Linked List
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Split Singly Linked List Alternatingly
- Maximum path sum
- Max and min element in Binary Tree
- Perfect Binary Tree
- Counting elements in two arrays
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- Full binary tree
- Modify Linked List-1
- Symmetric Tree
- Arrange Consonants and Vowels
- Vertical sum
- Count Pairs whose sum is equal to X
- Check if Tree is Isomorphic
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Deletion and Reverse in Linked List
- Linked List Matrix
- Reverse First K elements of Queue
- Height of Spiral Tree
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Deletion in a Binary Tree
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Move all zeros to the front of the linked list
- Delete middle element of a stack

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Complement
- Sum Of Prime
- Number of Unique Paths
- Maximum Sub Array
- Wave Array
- Overlapping Intervals
- Equal Sum
- Next Permutation
- Longest Increasing Subsequence
- Longest Common Subsequence
- Minimum number of jumps
- Count ways to reach the n’th stair
- Count ways to N'th Stair(Order does not matter)
- Edit Distance
- Maximum Rectangular Area in a Histogram
- Consecutive 1's not allowed
- Next Smallest Palindrome
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Case-specific Sorting of Strings
- Sum of bit differences
- Factorials of large numbers
- Number following a pattern
- Relative Sorting
- Largest square formed in a matrix
- Design a tiny URL or URL shortener
- Number of ways
- Minimum Cost of ropes
- Form a palindrome
- Preorder to Postorder
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Minimum steps to get desired array
- Subsequence matching
- Palindromic Array
- Is Binary Number Multiple of 3
- Card Rotation
- Triplet Sum in Array
- Max possible amount
- Maximum Profit
- Minimize the heights
- Total Decoding Messages
- Unique BST's
- Subsets
- Combination Sum
- Combination Sum - Part 2
- Longest Prefix Suffix
- K’th smallest element
- Snake and Ladder Problem
- Shortest Source to Destination Path
- Replace O's with X's
- Knight Walk
- Find all four sum numbers
- Print leaf nodes from preorder traversal of BST
- Is Sudoku Valid
- Find whether path exist
- Check Mirror in N-ary tree
- Length of largest region of 1's
- Rearrange characters
- First non-repeating character in a stream
- Count subsequences of type a^i b^j c^k
- Stepping Numbers
- Kth largest element in a stream
- Smallest distinct window
- Floyd Warshall
- Nearly Sorted Algorithm
- Maximum sum Rectangle
- Steps by Knight
- Numbers with alternative 1's
- Brackets in Matrix Chain Multiplication
- Matrix Chain Multiplication
- Maximum Tip Calculator
- Alternate Vowel and Consonant String
- Next higher number in one swap
- Previous number in one swap
- Print N-bit binary numbers having more 1’s than 0’s
- Next higher palindromic number using the same set of digits
- Count of Palindromic substrings in an Index range
- Lazy Pasha
- Check if strings are rotations of each other or not
- String Conversion
- Print Binary Tree levels in sorted order
- Save Gotham!
- Buying Vegetables
- The Painter's Partition Problem
- Maximize the sum of selected numbers from an array to make it empty
- count special palindromic
- Range Queries for Longest Correct Bracket Subsequence
- Given a linked list, reverse alternate nodes and append at the end
- Reverse a Linked List in groups of given size.
- 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
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Delete a node from BST
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Merge K sorted linked lists
- Find the number of islands
- Circular tour
- Max rectangle
- Make Binary Tree
- Check if subtree
- Kth element in Matrix
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Minimum Swaps
- Longest Consecutive Subsequence
- Delete keys in a Linked list
- Length of longest palindrome in linked list
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Polynomial Addition
- Complete Binary Tree
- Construct expression tree
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Node at distance
- Construct Tree from Preorder Traversal

- Maximum Index
- Maximum of minimum for every window size
- Head to Tail ordering
- Find Prime numbers in a range
- Largest Number formed from an Array
- Rearrange an array with O(1) extra space
- Return two prime numbers
- Sorting Elements of an Array by Frequency
- X Total Shapes
- Boolean Parenthesization
- Longest valid Parentheses
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Numbers with one absolute difference
- Count the subarrays having product less than k
- Adventure in a Maze
- Reorder List
- Binary Tree to DLL
- Tree from Postorder and Inorder
- Nodes at given distance in binary tree