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De-dupe
Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

7 years ago

Question

Summation of a character
I was working on Cody Problem 74 where I found examples like: sum('13') = 100 sum('22') = 100 sum('123456') = 309 I wonder h...

7 years ago | 2 answers | 0

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answers

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Balanced number
Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

7 years ago

Solved

Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

7 years ago

Solved

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 = ...

7 years ago

Solved

Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

7 years ago

Solved

Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

7 years ago

Solved

Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

7 years ago

Solved

Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

7 years ago

Solved

Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

7 years ago

Solved

Summing Digits within Text
Given a string with text and digits, add all the numbers together. Examples: Input str = '4 and 20 blackbirds baked in a...

7 years ago

Solved

Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

7 years ago

Solved

Is this triangle right-angled?
Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

7 years ago

Solved

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...

7 years ago

Solved

radius of a spherical planet
You just measured its surface area, that is the input.

7 years ago

Solved

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

7 years ago

Solved

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...

7 years ago

Solved

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

7 years ago

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

7 years ago

Solved

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...

7 years ago

Solved

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, ....

7 years ago

Solved

Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

7 years ago

Solved

Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

7 years ago

Solved

Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

7 years ago

Solved

Create a vector
Create a vector from 0 to n by intervals of 2.

7 years ago

Solved

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

7 years ago

Solved

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

7 years ago

Solved

Find max
Find the maximum value of a given vector or matrix.

7 years ago

Solved

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

7 years ago

Solved

Inner product of two vectors
Find the inner product of two vectors.

7 years ago