Solved

Is it an Armstrong number?
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. Fo...

29 days ago

Solved

Determine if input is a Narcissistic number
<http://en.wikipedia.org/wiki/Narcissistic_number Narcissistic number> is a number that is the sum of its own digits each raised...

29 days ago

Solved

Determine if input is a perfect number
A perfect number occurs whent the sum of all divisors of a positive integer, except the number itself, equals the number. Examp...

29 days ago

Solved

First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

29 days ago

Problem

Container With Most Water
You are given an integer array height . There are vertical lines drawn such that the two endpoints of the ith line are (i, 1) an...

29 days ago | 0 | 10 solvers

Solved

Two Sum
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You m...

29 days ago

Problem

Two Sum
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You m...

29 days ago | 0 | 11 solvers

Solved

Calculate the Damerau-Levenshtein distance between two strings.
<http://www.mathworks.co.uk/matlabcentral/cody/problems/2303-compute-hamming-distances-between-each-pair-of-rows-from-two-input-...

1 month ago

Solved

Decrypt the cypher using XOR encryption (for beginners)
Inspired by Project Euler n°59 Each character on a computer is assigned a unique code and the preferred standard is ASCII (...

1 month ago

Solved

From a given cell array of strings, extract the non-unique strings.
We are given a cell array of strings C. From this cell array we require to extract the subset of non-unique strings, returning t...

1 month ago

Solved

longest common substring : Skipped character version
Two strings are given. Find the longest common substring between them. The substring characters need not be adjacent. They, howe...

1 month ago

Solved

Did you say please? - Find one string within another without strfind or regexp/regexpi
For a given string sentence, determine if the string word 'please' is present or not. If so, return the string 'OK', else return...

1 month ago

Solved

Concatenate string with cell array of strings
Given a cell array of strings (a), a target string (b), and a target position (ind), return a cell array of strings (c) in which...

1 month ago

Solved

Find the longest match inside two strings
Given two strings, find the longest string which is contained within both strings. e.g. the longest string that is contained ...

1 month ago

Solved

Flipping a Matrix
Flipping matrix up and down. If a central row is exists, leave it, and flip remaining rows. Example Mat = magic(3) ...

1 month ago

Solved

Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

1 month ago

Solved

Broken numlock key, oppps !
The numlock key on my computer is pressed and is now broken, so I cant press it to switch off the numlock mode. And hence I am n...

1 month ago

Solved

Flip the bit
Given an input character string (e.g. '1001'), return a character string with the bits flipped ('0110').

1 month ago

Solved

Cat, Meowcat and Concatenation
Input is a cell array containing several strings. Find the largest continuous sub-string common to all strings. All strings are ...

1 month ago

Solved

longest common semi-substring
Finding longest common substring is a common problem in string processing. This problem is a variant of that. Two strings are g...

1 month ago

Solved

Prime Letters = Removing
Given a string, remove all the letters which in ASCII Code are prime numbers. For Example: s1 = 'Determine which array e...

1 month ago

Solved

Legend of Zelda - Rupee Count (Item Purchase)
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/3025-zelda-rupee-count Problem 3025>, suppose that an arr...

1 month ago

Solved

Legend of Zelda - Rupee Count
Rupees are the main currency in The Legend of Zelda games. The value of each rupee is determined by its color. Unfortunately, th...

1 month ago

Solved

Beauty of Parentheses
Given a string consisting of closed parentheses, form a string array in the following way so that the orders of these parenthese...

1 month ago

Solved

Reverse within string
If input is a string 'yellow' the output should be 'leywol'. Locate the middle of the string and reverse the first (yel) and sec...

1 month ago

Solved

Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

1 month ago

Solved

Genome decoding
Inspired by a question on the answer forum: You are given a matrix of 8-bit integers which encodes a genome. Each integer can...

1 month ago

Solved

Convert a vector into numbers
Suppose a vector x = [ 1 2 4 7] is given. You have to convert this vector into string number y = '1247'. Examples x = [ 1...

1 month ago

Solved

Calculator spelling - Letters to Numbers
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

1 month ago

Solved

Calculator spelling - Numbers to Letters
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

1 month ago