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Local Minima
Given a vector of data x, find the values of local minimum that is smaller than its neighbor elements. For example, if x =...

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Double Fibonacci
double_fibonacci takes two integers, each greater than one, as input arguments (it does not have to check the format of the inpu...

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Number Puzzle - 075

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Number Puzzle - 030

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Number Puzzles - 021

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Number Puzzles - 013

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Place numbers
Given two input first input is a matrix which consist of the index numbers of the second input vector. You place the second inpu...

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Finding the Most Frequent Letter in a Text
You are given a text containing various English letters, digits and punctuation symbols. Your task is to find the most frequentl...

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Number Puzzle - 114

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Number Puzzle - 110

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Number Puzzle - 092

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Number Puzzle - 043

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Add non-triangular numbers
The nth triangular number is the sum of the first n positive integers. The sequence of triangular numbers starts 1, 3, 6, 10, 15...

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Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...

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Number Puzzles - 012

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Letras Maisculas
Dado uma string A, retorne apenas os caracteres maiúsculos de A Maiusculas('Hello World') = 'HW';

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Remove Unique Elements
Given a list of integers, we want to keep only the non-unique elements in this list. To do this, we need to remove all the uniqu...

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Chain multiplication - 01
Say, you are given two matrices - A (shape= 3*4) and B(shape = 4*5). If you multiply these two matrices, the resultant matrix w...

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Sum Sum Sum!
Calculate the sum of the natural numbers from 1 to n

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SAY 'OHYEAH'
Regardless of input, output the string 'OHYEAH'.

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Get the mean digit
Write a function that gives the mean digit (round towards nearest integer) of an input and positive number. For example: x ...

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ASCII sum of phrases
Find the sum of the numeric equivalents of all characters entered in a phrase. For example: for the phrase 'My name is test', th...

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give-nth-decimal-place-of-pi up to 100 digits
max 100th place after the decimal point this is upgrade problem of 142

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Happy Free Wednesday!
Just submit your solution on any Wednesday. *Related Challenges:* # Happy Free Wednesday! # Happy Free 2019! # Happy Fr...

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Juego de posiciones
Crea una función que ordene vectores de tal manera que los primeros números sean negativos ordenados de menor a mayor. Y después...

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Closely related?
Given a function past_records() that will report blood sugar level of two twin brothers some random number of days ago. For exam...

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The Prime Days of Christmas
On the first day of Christmas my true love sent to me partridges in a pear tree. On the second day of Christmas my true love s...

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Area of a rectangle
FInd the area of a rectangle with a length L and width W. Round to the nearest integer.

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Convert a grayscale image into RGB colour format, preserving data type
In the Image Processing Toolbox, MATLAB provides rgb2gray to convert a 3 channel color image into a 1 channel intensity...

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Find sum of numbers on the cornice of a matrix.

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