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Binbin Qi


China University of Petroleum

3,663 total contributions since 2009

Professional Interests: Machine Learning/ Math/ Geophysics

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Solved


remove numbers from a string
check the given string for any numbers.in case one is found,remove it.but the two portions should be separated. if more than one...

11 days ago

Solved


Calculate the area of a circle
Given a circle of diameter x calculate its area

11 days ago

Solved


find subscripts from linear index
a matrix and the linear index of an element is given as input. find the subscripts of that element. if linear index=3 , outp...

11 days ago

Solved


Convert Fahrenheit to Kelvin
Convert the value f in Fahrenheit to Kelvin

11 days ago

Solved


SAY 'OHYEAH'
Regardless of input, output the string 'OHYEAH'.

11 days ago

Solved


Repeat elements of a vector
Repeat each elements of a given vector according to their values. say x=[1,2,1,3] y=[1,2,2,1,3,3,3]

11 days ago

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factorial
calculate x!

11 days ago

Solved


Given a vector x, return vector y with all negative elements from the vector x.
Given a vector x, return vector y with all negative elements from the vector x if x has negative elements. Otherwise return 0. ...

11 days ago

Solved


Check prime numbers
Let x, return 1 if x is a prime number, 0 otherwise e.g x = 7, return y =1; x = 6 return y = 0;

11 days ago

Solved


Create a "+" flag
Given two odd numbers, [m, n], return a matrix of size m x n which has all elements of the centre column and centre row set as 1...

11 days ago

Solved


Square
square root of x

11 days ago

Solved


Find MPG of Lightest Cars
The file |cars.mat| contains a table named |cars| with variables |Model|, |MPG|, |Horsepower|, |Weight|, and |Acceleration| for ...

11 days ago

Solved


Quadratic equation
given three inputs (a, b, c) for the equation a*x^2+b*x+c=0; return 1 if the roots are complex (non zero imaginary), and 0 if th...

11 days ago

Solved


Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

1 month ago

Solved


square a number twice with square root of 4/5
square a number twice with square root of 4/5

1 month ago

Solved


Sum Sum Sum!
Calculate the sum of the natural numbers from 1 to n

1 month ago

Solved


Perimeter of a square!
Calculate the circumference of the square whose side is n

1 month ago

Solved


Triangle???
Calculate the circumference of an equilateral triangle with x

1 month ago

Solved


Sum sum!!!
Sum the numbers from 1 to n

1 month ago

Solved


Calculate the square root of a number
Input a Output b = srt(a)

1 month ago

Solved


calculate the length of matrix
input 1 array, calculate the length

1 month ago

Solved


Find the max element of the array
Find the max element of the array

1 month ago

Solved


to the 2 all elements
to the 2 all elements

1 month ago

Solved


easy problem
Find the last element of the array

1 month ago

Solved


the average value of the elements
Calculate the average value of the elements in the array

1 month ago

Solved


Converts numbers into characters
Converts numbers into characters

1 month ago

Solved


Duplicate all elements in the array
Duplicate all elements in the array

1 month ago

Solved


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

2 months ago

Solved


Calculate Inner Product
Given two input matrices, |x| and |y|, check if their inner dimensions match. * If they match, create an output variable |z|...

2 months ago

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