Community Profile # Tim

Last seen: 4 days 前 自 2012 起处于活动状态

#### 统计数据

• • • • • • • • • • • • #### Content Feed

Find the smallest number leading to a maximal product of two numbers that concatenate to another number
Cody Problem 58971 involves the maximal product of numbers that concatenate to a number . For example, if , then the products ar...

10 days 前

Find the nine-point circle of a triangle
Cody Problem 1336 asks us to find the circle that circumscribes a triangle, and Cody Problem 58354 asks us to find the circle th...

11 days 前

Compute the maximal product of any two numbers whose concatenation is n
Write a function that takes an input and computes the maximal product of numbers that concatenate to . For example, if , then t...

18 days 前

Compute measurement uncertainty
Suppose a variable depends on independent variables , , . If the independent variables have uncertainty , , etc. and the uncer...

24 days 前

Count block fountains
A block fountain consists of rows of circles in which each row is a continuous block of circles (i.e., adjacent circles are tang...

24 days 前

Find the 2023 Russian Lunar Lander (LUNA-25)
Locate the LUNA-25, 2023 Russian Lander, by comparing Pre and Post-Landing Lunar images. Give the [row,col] of the approximate...

24 days 前

Find duplicate number from a vector of size n + 1 containing numbers from 1:n
From a given vector of size n + 1, return the duplicate number. Constraints The vector can only contain numbers from 1 to ...

1 month 前

Given Hypotenuse points create two right triangles
Given two points defining a hypotenuse create two right triangles of (h,5,R). Return the two (x,y) points that create the right ...

1 month 前

Intersection(s) of Circles
Do two given circles intersect in Zero, One, or Two points and provide the intersection(s). The Stafford method may provide some...

1 month 前

Find the Points Tangent to a Circle from an External Point
From a point where do the lines touch a circle tangentially?. The loldrup solution may provide some guidance and alternate metho...

1 month 前

Array size along k-th dimension
Given an n-dimensional array M, find the size of M along the k-th dimension (1 <= k <= n), without using size(), height() or wid...

2 months 前

Array Height (no usage of size)
Find the array height, the number of rows. Size may not be used.

2 months 前

Array Width (no usage of size)
Find the array width. Size may not be used.

2 months 前

Solve the matrix equation AXB + X + C = 0 for X
Let A, B, and C be square matrices of equal size, and let the matrix X be defined by the matrix equation A * X * B + X + ...

2 months 前

Solve the matrix equation AXB + C = 0 for X
Let A, B, and C be square matrices of equal size, and let the matrix X be defined by the matrix equation A * X * B + C = ...

2 months 前

A Mathematical Problem
Find the kth digit of the inverse of a number 'n'. Assumption: n>1

2 months 前

Find the Best Hotels
Given three input variables: hotels - a list of hotel names ratings - their ratings in a city cutoff - the rating at which yo...

2 months 前

Count collisions in an idealized block system
Two blocks, which have masses and , slide along a frictionless, semi-infinite track bounded by a stationary wall. Initially blo...

2 months 前

Compute the Sisyphus sequence
A recent article in the New York Times featured the Online Encyclopedia of Integer Sequences, founded by Neil J.A. Sloane. One o...

2 months 前

Find the altitudes of a triangle
Write a function that takes the x- and y-coordinates of three points describing the vertices of a triangle and returns the coord...

2 months 前

Classify water surface profiles
Problem statement Write a function to classify the water surface profile starting at depth in a channel with longitudinal slop...

3 months 前

Continuous NaNs - I
Remove any continuous NaNs that appear in the array - %Example 1 input = [1 NaN 2 NaN NaN 3 NaN NaN NaN] output = [1 NaN 2 ...

3 months 前

Compute the critical depth of a channel
Problem statement Write a function to compute the critical depth of a channel with discharge . The unit system will be specifie...

3 months 前

Compute the normal depth of a channel
For steady uniform flow in a channel of constant cross section and slope, the depth does not change with distance or time. In th...

4 months 前

Calculate the volume of the intersection of two balls
Consider two balls (solid spheres) in , with radius and respectively. Suppose that the distance between the centers of the two...

4 months 前

Easy Sequences 112: Almost Golden Integer Rectangles 1
A golden rectangle is a rectangle whose side lengths are in the golden ratio, , where: . ...

4 months 前

Sign of IEEE Single
Output the sign bit of the IEEE representation of the single-typed 32-bit float input as the uint8 "1" or the uint8 "0".

4 months 前

Draw '5' in Chinese.
Draw a x-by-x matrix '五' using 1s and 0s. Example: x=5 ans= [1 1 1 1 1 0 1 0 0 0 1 1 1 1 0 0 1 0 1 0 1 1 1 1 1] x=7...

4 months 前

Create an empty array
Suppose you need an empty array. e = [] will give you one, but it's a double array, which may not help if you need a differen...

4 months 前

Integrate a product of gamma functions
Write a function to compute the following integral: where and is the gamma function, the subject of Cody Problem 46025.

4 months 前