Everett Rubel

Aktiv seit 2012

Followers: 0 Following: 0

Nachricht

Professional Interests: writing, user experience

Statistik

Abzeichen anzeigen

Feeds

Gelöst

Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

fast 14 Jahre vor

Gelöst

QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a <http://en.wikipedia.org/wiki/Keyboa...

fast 14 Jahre vor

Gelöst

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...

fast 14 Jahre vor

Gelöst

Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

etwa 14 Jahre vor

Gelöst

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

etwa 14 Jahre vor

Gelöst

Pattern matching
Given a matrix, m-by-n, find all the rows that have the same "increase, decrease, or stay same" pattern going across the columns...

etwa 14 Jahre vor

Gelöst

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...

etwa 14 Jahre vor

Gelöst

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 ...

etwa 14 Jahre vor

Gelöst

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 =...

etwa 14 Jahre vor

Gelöst

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 = ...

etwa 14 Jahre vor

Gelöst

Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

etwa 14 Jahre vor

Gelöst

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 ...

etwa 14 Jahre vor

Gelöst

Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

etwa 14 Jahre vor

Gelöst

Scoring for oriented dominoes
Given a list of ordered pairs, and the order they should be placed in a line, find the sum of the absolute values of the differe...

etwa 14 Jahre vor

Gelöst

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...

etwa 14 Jahre vor

Gelöst

Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

etwa 14 Jahre vor

Gelöst

Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

etwa 14 Jahre vor

Gelöst

The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

etwa 14 Jahre vor

Gelöst

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

etwa 14 Jahre vor

Gelöst

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

etwa 14 Jahre vor

Gelöst

Find the alphabetic word product
If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

etwa 14 Jahre vor

Gelöst

Quote Doubler
Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

etwa 14 Jahre vor

Gelöst

radius of a spherical planet
you just measured its surface area, that is the input.

etwa 14 Jahre vor

Gelöst

Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

etwa 14 Jahre vor

Gelöst

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

etwa 14 Jahre vor

Gelöst

The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

etwa 14 Jahre vor

Problem

Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration
The original Penny Flipping Problem (PF-1) starts with a stack of N pennies arranged with all the coins heads up. The first oper...

etwa 14 Jahre vor | 2 | 19 Lösungsvorschläge

Gelöst

etwa 14 Jahre vor

Gelöst

Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

etwa 14 Jahre vor

Gelöst

Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

etwa 14 Jahre vor

Mehr laden