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[Master Regular Expression] Reformat Phone Number
You are given a phone number as a string number. number consists of digits, spaces ' ', and/or dashes '-'. You would like to re...

2 days ago

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[Master Regular Expression] Goat Latin
You are given a string sentence that consist of words separated by spaces. Each word consists of lowercase and uppercase letters...

2 days ago

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[Master Regular Expression] Keyboard Row
Given an array of strings words, return the words that can be typed using letters of the alphabet on only one row of American ke...

2 days ago

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Chào các bạn.
Cho 3 số. Tính tổng của chúng

7 days ago

Solved


Jump Game
Bạn được cho một mảng số nguyên nums. Ban đầu bạn được đặt ở vị trí chỉ mục đầu tiên của mảng, và mỗi phần tử trong mảng biểu th...

13 days ago

Solved


Leo Bậc Thang
Bạn đang leo cầu thang. Cần n bước để lên đến đỉnh. Mỗi lần bạn có thể leo 1 hoặc 2 bước. Hỏi có bao nhiêu cách khác nhau để le...

13 days ago

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...

27 days ago

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Pascal's pyramid
In Pascal's triangle each number is the sum of the two nearest numbers in the line above: 1 1 1 ...

1 month ago

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Generate this matrix
Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

1 month ago

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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

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Joining Ranges
You are given a n-by-2 matrix. Each row represents a numeric range, e.g. x = [0 5; 10 3; 20 15; 16 19; 25 25] contains...

1 month ago

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Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

1 month ago

Solved


We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

1 month ago

Solved


Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

1 month ago

Solved


Generate N equally spaced intervals between -L and L
Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. For...

1 month ago

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Specific Element Count
Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

1 month ago

Solved


Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

1 month ago

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Return a list sorted by number of consecutive occurrences
Inspired by Problem 38 by Cody Team. Given a vector x, return a vector y of the values in x sorted by the number of CONSECUTIVE ...

1 month ago

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Return unique values without sorting
If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The values of B are in the same order a...

1 month ago

Solved


First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero i...

1 month ago

Solved


Getting the indices from a matrix
Inspired by Problem 645. Getting the indices from a matrix. Given a matrix A (or a vector), return the indices (always in row...

1 month ago

Solved


Construct an index vector from two input vectors in vectorized fashion
Create an index vector defined by two input vectors, one defining the beginnings of one or more index ranges, and the other defi...

1 month ago

Solved


Piecewise linear interpolation
Given an Mx2 vector and a row of M-1 integers, output a two column vector that linearly interpolates Y times between each succes...

1 month ago

Solved


How to reverse spdiags?
The spdiags function extracts all nonzero diagonals from the m-by-n matrix A. So if A=[1 2 3;4 5 6;7 8 9], spdiags(A)=[7 4...

1 month ago

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Back to Basics - New Data Type in R2016b - convert a char to a string
Convert an char array into a string.

1 month ago

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PACMAT - G03 Ghosts use minimum path to PACMAT; 3 Lives
The Classic PACMAN game brought to Cody. PACMAT requires clearing the board of Yellow Dots while not bumping into the wanderi...

1 month ago

Solved


Five-dimensional maze
*Description* The traditional maze is 2-dimensional: the navigator can move in the positive or negative directions along two ...

1 month ago

Solved


Five steps to enlightenment
This problem asks you to identify valid variations of the famous <https://en.wikipedia.org/wiki/Sum_and_Product_Puzzle sum and p...

1 month ago

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Golomb's self-describing sequence (based on Euler 341)
The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G...

1 month ago

Solved


Integer sequence - 2 : Kolakoski sequence
Get the n-th term of Kolakoski Sequence.

1 month ago

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