This is a task list focused on Algorithm topics for OpenGenus IQ and Cosmos
See this guide to understand how to use this task list. Message @aditya if you need any help. You may work on uncompleted tasks, improve existing work and add questions for a completed task. See published posts here
Following is a small collection of scopes you may contribute to:
Search algorithms
 Linear search
 Binary search
 Ternary search
 Exponential search
 Fibonacci search (done by @Harshita)
 Golden section search (assigned to @ankursanodiya)
 Fuzzy search (assigned to @gautamaggrawal)
 Interpolation search
 Jump search
 Fractional cascading in Binary search
 Noisy binary search
Sorting algorithms
 Bead sort
 Bogo sort
 Bubble sort
 Bucket sort (done by @Saranyajena)
 Circle sort (assigned to @ankursanodiya)
 Comb sort (done by @shreyasingh)
 Counting sort
 Cycle sort (done by @Robotjelly123)
 Flash sort
 Gnome sort
 Heap sort (done by @arunkumar0258)
 Insertion sort
 Binary Insertion sort
 Intro sort (assigned to @Saranyajena)
 Median sort
 Merge sort
 Pigeonhole sort (assigned to @Harshita)

Quick sort
 Median of medians (assigned to @shreyateeza)
 Quantum Bogo Sort
 Radix sort (done by @Robotjelly123)
 Selection sort
 Shaker sort
 Shell sort
 Shell Metzner sort
 Sleep sort (assigned to @la27)
 Stooge sort (assigned to @ankursanodiya)
 Topological sort using Depth First Search (done by @Saranyajena)
 Topological sort using Breadth First Search
 Tree sort
 Odd even sort (assigned to @Harshita)
Graph algorithms
 Hamiltonian cycle (assigned to @TravellerOnCode)
 Hamiltonian path (assigned to @Harshita)
 Clique in graphs
 clique (assigned to @saddhu1005)
 Bron Kerbosch algorithm (assigned to @saddhu1005)
 Greedy approach to find the single maximal clique (assigned to @saddhu1005)
 Algorithm to find cliques of a given size k (assigned to @saddhu1005)
 Minimum cut
 Karger cut
 Maximum matching
 Assignment problem
 Hopcroft Karp algorithm (assigned to @saddhu1005)
 Blossom algorithm (assigned to @saddhu1005)
 Hungarian algorithm (assigned to @saddhu1005)
 Hall marriage theorem
 Konig theorem
 Peterson theorem
 Shortest path with k edges (assigned to @saddhu1005)
 Tarjan algorithm (Strongly connected components) (done by @pradyumn014)
 Kosaraju’s algorithm (Strongly connected components) (assigned to @r0uxt1)
 Centroid decomposition (assigned to @saddhu1005)
 Depth first search
 Breadth first search
 Shortest path algorithms:
 Bellman ford algorithm
 Dijkstra’s Algorithm
 Floyd–Warshall’s Algorithm
 Shortest path faster algorithm
 Johnson algorithm (assigned to @nisarg1499)
 Minimum spanning tree
 reverse delete algorithm (assigned to @skwillbesk)
 Kruskal minimum spanning tree
 Prims minimum spanning tree
 Boruvka minimum spanning tree
 Bipartite check (assigned to @ishagautam)
 Dials algorithm (Optimised Dijkstra’s algorithm)
 Farach Colton and Bender algorithm (assigned to @siddharth)
 find the mother vertex in a graph (assigned to @phm_123)
 finding the paths between two vertexes in a graph (assigned to @phm_123)
 maximum or minimum element in a binary search tree (assigned to @phm_123)
 minimum number of swaps to be performed to form binary search tree from binary tree (assigned to @phm_123)
 convert a Binary search tree into a balanced binary search tree (assigned to @phm_123)
 tree traversals (inorder , postorder , preorder) (assigned to @akshay_103)
 kth smallest element in a Binary Search Tree (assigned to @phm_123)
 copy a binary tree where each node has an additional parameter which points to any random node in the tree (assigned to @akshay_103)
 Find right sibling of given node in binary tree with parent pointers (assigned to @akshay_103)
 Find a vertex which if made the root will minimize the height of the tree (assigned to @ajaybechara1)
 algorithm to find sum of k small elements in binary search tree (assigned to @phm_123)
 find the height of binary tree (assigned to @akshay_103)
 minimum number of edges between two nodes using BFS (assigned to @manan45)
Computational geometry
 2D line intersection (assigned to @piyush26c)
 2D separating axis test
 Area of polygon (assigned to @piyush26c)
 Area of triangle (assigned to @piyush26c)
 Axis aligned bounding box collision
 Bresenham line (done by @piyush26c)
 Bresenham circle drawing algorithm (done by @piyush26c)
 Chans algorithm
 Cohen sutherland line clipping algorithm
 Sutherland Hodgeman algorithm
 Distance between two points (assigned to @piyush26c)
 Half plane intersection
 Sphere Tetrahedron Intersection
 Convex Hull
 Warnock algorithm
Dynamic programming
 Calculate Binomial Coefficient (assigned to @piyush26c)
 Calculate Permutation Coefficient (assigned)
 Calculate nth Catalan Number
 Calculate Bell Numbers
 Calculate Fibonacci numbers (assigned to @Ishmeetk21)
 Print Fibonacci Series in reverse order (assigned to @prashantraghu)
 Calculate ways elements can be paired (where element can stay single or be paired)
 Number of ways to form a heap with n distinct integers
 Subset with sum divisible by m (assigned to @siddharth )
 Number of subsets with sum divisible by m (assigned to @siddharth)
 Subset sum problem (assigned)
 Maximum Subarray Sum Excluding Certain Elements
 Print maximum number of A’s with N key press (print A, copy, select all, paste)
 Number of palindromic paths in a matrix
 Maximum profit by buying and selling a share at most k times
 Find Largest divisible pair subset (assigned)
 largest subset where sum of each pair is a prime
 largest subset where difference of each pair is 1 (absolute value)
 largest subset where sum of each pair is not divisible by K
 subset with sum closest to zero
 Find all subsets with given sum
 Assembly Line Scheduling (assigned to @KiritsugeEmiya)
 Newman Conway Sequence (assigned to @piyush26c)
 Count even length binary sequences with same sum of first and second half bits
 Count all subsequences having product less than K (assigned to @Ishmeetk21)
 Maximum sum of pairs with specific difference
 Maximum size square submatrix with all 1s
 Recursively break a number in 3 parts (n/2, n/3, n/4) to get maximum sum
 Maximum sum rectangle in a 2D matrix
 Largest rectangular sub matrix having sum divisible by k
 Largest rectangular sub matrix having sum equal to 0
 Largest rectangular sub matrix with equal number of 1’s and 0’s
 Longest Geometric Progression
 Given a string consisting of digits 09, count the number of subsequences in it divisible by m
 Count ways to increase LCS length of two strings by one
 Count arrays in which all adjacent elements are such that one of them divide the another
 Ways to add parenthesis for evaluation
 Check if a string is interleaved of two other strings
 Shortest possible combination of two strings
 Longest repeating and non overlapping substring
 Minimum number of elements which are not a part of increasing or decreasing subsequence in array
 Matrix Chain Multiplication Problem (assigned to @ishagautam)
 Printing brackets in Matrix Chain Multiplication Problem
 Partition a set into two subsets such that the difference of subset sums is minimum
 partition a set into two subsets such that the sum of each subset is same (assigned to @Shruti)
 Number of ordered pairs such that (A[i] & A[j]) = 0 (assigned to @Shruti)
 Wildcard Pattern Matching (given a string and wildcard pattern) (assigned to @shaljais01)
 Find number of times a string occurs as a subsequence in given string (assigned to @epicalyx)
 Word Wrap Problem
 Palindrome Partitioning
 Boolean Parenthesization Problem (assigned to @phm_123)
 Longest repeated subsequence (assigned to @Vaibhav)
 Maximum sum bitonic subsequence (done by @siddharth)
 Tile Stacking Problem (assigned to @saddhu1005)
 Ways to write n as sum of two or more positive integers (assigned to @sajal_tikariha)
 Longest Arithmetic Progression (assigned to @sajal_tikariha)
 Unbounded Knapsack Algorithm (assigned to @masters_abh)
 Coin change problem
 Assembly Line Scheduling (assigned to @karna98)
 Edit distance problem (assigned to @rajashree23)
 Cutting a Rod to maximize profit (1D DP) (assigned to @startech)
 number of paths with k edges in a graph (dynamic programming + divide conquer) (assigned to @saddhu1005)
 vertex cover problem (assigned to @saddhu1005)
 word break problem (assigned to @saddhu1005)
 finding minimum cost polygon triangulation (assigned to @phm_123)
 finding the largest independent set in a binary tree (assigned to @phm_123)
[add your list]
Greedy algorithms
 Smallest number with sum of digits as N and divisible by 10^N (assigned)
 Find Smallest number with given number of digits and digits sum (assigned to @abdulwael)
 Rearrange string such that no two adjacent are same
 Rearrange string such that all same characters become d distance away
 Smallest subset with sum greater than all other elements
 Huffman coding
 Huffman decoding
 Minimum product subset in an array (assigned to @r0uxt1)
 Maximum product subset in an array (assigned to @r0uxt1)
 Divide 1 to n into two groups with minimum sum difference (assigned to @r0uxt1)
 Split n into maximum composite numbers (assigned)
 Maximize the sum of arr[i]*i (assigned to @aryabharat)
 Minimum sum of products of two array (assigned to @aryabharat)
 Largest lexicographic array with atmost K consecutive swaps (assigned to @r0uxt1)
 Activity Selection problem (assigned to @shreyasingh)
 Job sequencing problem (assigned to @aryabharat)
 Fractional Knapsack Problem (assigned to @shreyasingh)
 Huffman Coding (assigned to @dldisha)
 Minimum swaps for bracket balancing (assigned to @Vaibhav)
 Find the minimum number of platforms needed in the station to avoid any delay in arrival of any train (assigned to @Vaibhav)
 smallest subset with sum greater than all other elements (assigned to @aryabharat)
[add your list]
Others
 check armstrong number
 Square root Decomposition
 Booth’s algorithm for lexicographically minimal string rotation
 Euclidean GCD algorithm (assigned to @arunesh)
 Minimum insertion to make shortest palindrome (@mishramonalisha76)
 Multiple array range increments in linear time (assigned to @r0uxt1)
 Binary Lifting and LCA (assigned to @arshad2117)
 Heap’s algorithm for generating permutations (assigned to @piyush26c)
 Zalgorithm (assigned to @shubhammantri1)
 word break Problem using backtracking and Trie (assigned to @saddhu1005)
 maximum subarray sum using divide and conquer (assigned to @akshay_103)
 Smallest common supersequence (assigned to @saddhu1005)
 Complexity Notation and Analysis of Algorithms (assigned to @rajvijen)
 Master theorem (assigned to @rajvijen)
[Add your topic]