Community Profile

photo

jiang chen


2018년부터 활동

통계

  • First Review
  • Solver

배지 보기

Content Feed

보기 기준

문제를 풀었습니다


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 = ...

거의 6년 전

문제를 풀었습니다


Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

거의 6년 전

문제를 풀었습니다


Subset Sum
Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

거의 6년 전

문제를 풀었습니다


Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


Find the two most distant points
Given a collection of points, return the indices of the rows that contain the two points most distant from one another. The inpu...

거의 6년 전

문제를 풀었습니다


Maximum running product for a string of numbers
Given a string s representing a list of numbers, find the five consecutive numbers that multiply to form the largest number. Spe...

거의 6년 전

문제를 풀었습니다


QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a standard U.S. QWERTY keyboard and it...

거의 6년 전

문제를 풀었습니다


Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

거의 6년 전

문제를 풀었습니다


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

거의 6년 전

문제를 풀었습니다


Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

거의 6년 전

문제를 풀었습니다


Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

거의 6년 전

문제를 풀었습니다


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, ....

거의 6년 전

문제를 풀었습니다


Extract leading non-zero digit
<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

거의 6년 전

문제를 풀었습니다


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

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


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 ...

거의 6년 전

문제를 풀었습니다


Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

거의 6년 전

문제를 풀었습니다


Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


Remove all the words that end with "ain"
Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

거의 6년 전

문제를 풀었습니다


Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

거의 6년 전

문제를 풀었습니다


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

거의 6년 전

문제를 풀었습니다


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

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

문제를 풀었습니다


Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

거의 6년 전

문제를 풀었습니다


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...

거의 6년 전

더 보기