Dominant Matrix - 01
A matrix is said to be diagonally dominant if for every row of the matrix, the magnitude of the diagonal entry in a row is large...
26 days 前
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All capital?
Are all the letters in the input string capital letters?
Examples:
'MNOP' -> 1
'MN0P' -> 0
26 days 前
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construct matrix with identical rows
Input a row vector such as x=1:10. Now we need to construct a matrix with L rows,of which every row vector is a copy of x.
E...
26 days 前
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Related Vectors
I have two vectors A & B. If the values in vector A is zero then the corresponding value in vector B should be zero.
Example:...
26 days 前
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Find the remainder - 02
Given an array of integers, find the remainder when the summation of all the elements is divided by N
26 days 前
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Last Duplicate
Given an array of integers, find the last duplicate element — that is, the element whose second occurrence appears latest in the...
Finding an element in a vector
x is a vector of unknown length
your function should return the index of the first element in the vector that is greater than...
Sum of Positive Elements in a Matrix
Given a matrix A, write a function that returns the sum of all positive elements in A.
Input:
A = [-3, 4, -1; 6, -2, 8]
...
26 days 前
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Sum of Even Numbers in a Vector
Write a function that takes a vector x as input and returns the sum of all even numbers in x.
Input:
x = [1, 2, 3, 4, 5, 6] ...
26 days 前
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0, 2, 0, -2, 0, 2, 0, -2, ...
Generate the first n terms of a periodic sequence defined as
f(x) = 0, 2, 0, -2, 0, 2, 0, -2, ..., for x = 1, 2, 3, 4, 5, 6...
27 days 前
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Reverse a string
Reverse the given string.
Example
input = 'reverse'
output = 'esrever'
27 days 前
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Find the largest number
Find the largest number |x| among 4 numbers given as variables |a|, |b|, |c|, and |d|.
Example:
Input: a = 4; b = 7; c ...
27 days 前
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How many days in a month?
Return the number of days in a given month in 2017. If the input is not a valid month number, return -1.
Examples:
Input...
Add a vector to a matrix
Given a matrix |mat| of size |mXn| and a row vector |v| of size |1Xs|, return a matrix with |m+1| rows that conatains |mat| over...