407 total contributions since 2017

Audio Engineer @Sony

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Summing Digits within Text

Given a string with text and digits, add all the numbers together. Examples: Input str = '4 and 20 blackbirds baked in a...

3달 ago

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Counting Money

Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

3달 ago

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Return the 3n+1 sequence for n

A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

3달 ago

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Alphabetize by last name

Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

3달 ago

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Read a column of numbers and interpolate missing data

Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

3달 ago

Answered

I'm trying to create Random Music Player and could use help!

% clear all; close all; clc MusicList = dir('*.m4a'); while(1) r = randi(length(MusicList),1,1) [a, Fs] = audioread(...

I'm trying to create Random Music Player and could use help!

% clear all; close all; clc MusicList = dir('*.m4a'); while(1) r = randi(length(MusicList),1,1) [a, Fs] = audioread(...

6달 ago | 0

| accepted

Answered

how can i avoid return to zero from my plot

Bitsnum = 11; dataIn = randi([0 1],1,Bitsnum); i = 1; count = 0; t = 0:.01:length(dataIn); for j =1:length(t) if t(j) ...

how can i avoid return to zero from my plot

Bitsnum = 11; dataIn = randi([0 1],1,Bitsnum); i = 1; count = 0; t = 0:.01:length(dataIn); for j =1:length(t) if t(j) ...

6달 ago | 1

| accepted

Answered

Matlab Text file I/o

charnum = char_counter('simple.txt','a') function charnum = char_counter(a,b); f = fopen(a); c = textscan(f,'%s'); charnum...

Matlab Text file I/o

charnum = char_counter('simple.txt','a') function charnum = char_counter(a,b); f = fopen(a); c = textscan(f,'%s'); charnum...

6달 ago | 0

Answered

Generate an array with random numbers from M to N using the command randi

function [R1, R2, c] = random_test(r, s, t) if length(r)==1 r(2) = r; r(1) = 1; end rng('default'); R1=randi([r(1)...

Generate an array with random numbers from M to N using the command randi

function [R1, R2, c] = random_test(r, s, t) if length(r)==1 r(2) = r; r(1) = 1; end rng('default'); R1=randi([r(1)...

6달 ago | 1

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Find the maximum number of decimal places in a set of numbers

Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

7달 ago

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Make roundn function

Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

7달 ago

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Rounding off numbers to n decimals

Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

7달 ago

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Matlab Basics - Rounding III

Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

7달 ago

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Matlab Basics - Rounding II

Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

7달 ago

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Check that number is whole number

Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. <http://en.wikipedia.org/wiki/Whole...

7달 ago

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MATLAB Basic: rounding IV

Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

7달 ago

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MATLAB Basic: rounding III

Do rounding towards minus infinity. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 8

7달 ago

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MATLAB Basic: rounding II

Do rounding nearest integer. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 9

7달 ago

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MATLAB Basic: rounding

Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

7달 ago

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Sums with Excluded Digits

Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

7달 ago

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Trimming Spaces

Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

7달 ago

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Reverse Run-Length Encoder

Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

7달 ago

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Return a list sorted by number of occurrences

Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

7달 ago

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De-dupe

Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

7달 ago

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Balanced number

Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

7달 ago

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Making change

Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

7달 ago

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What is the distance from point P(x,y) to the line Ax + By + C = 0?

Given a point, P(x,y), find the distance from this point to a linear line. INPUTS: x, y, A, B, C OUTPUTS: d, the distance ...

7달 ago

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Replace NaNs with the number that appears to its left in the row.

Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

7달 ago

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Binary numbers

Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

7달 ago

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Pangrams!

A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

7달 ago