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# Sabarinathan Vadivelu

### KPIT Technologies

Active since 2012

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

presque 6 ans 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 ...

presque 6 ans 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 = ...

presque 6 ans ago

Solved

Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

presque 6 ans ago

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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...

presque 6 ans ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

presque 6 ans ago

Solved

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

presque 6 ans ago

Answered
pixel by pixel squaring of image?
outImage = zeros(size(inputImage)); for i = 1 : size(inputImage, 1) for j = 1 : size(inputImage, 2) o...

presque 6 ans ago | 1

Problem

Generate the sum of Squares of the given number
|P(n) = 1^2 + 2^2 + ... + n^2| |P(1) = 1| |P(2) = 1 + 4 = 5;| |P(3) = 5 + 9 = 14;| |P(4) = 14 + 16 = 30;|

plus de 6 ans ago | 0 | 87 solvers

Solved

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

plus de 6 ans ago

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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

plus de 6 ans ago

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

plus de 6 ans ago

Answered
Combine two cell array of different dimension
Try this A = {1,2}; B = {3, 5, 6}; C = horzcat(A, B) ans = C = {1 2 3 5 6}

environ 7 ans ago | 1

Answered
Launch a file with a popupmenu without Switch
If it is a script, Just include the file name " |ME_1| " in the editor window. Like this: str = str2double(get(handles.m...

presque 8 ans ago | 0

Question

Find the increasing and decreasing point in array?
I have an array. Which is increasing. At one point it starts decreases. This trend starts repeating many times in array. How ...

plus de 8 ans ago | 2 answers | 0

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answers

Question

How to smoothen the edges?
In the following Hand Image, How to smooth the edges in the indicated region? <</matlabcentral/answers/uploaded_files/8389/sa...

plus de 8 ans ago | 2 answers | 0

### 2

answers

Answered
count the number of objects in the eight.tif.
Check this out I = imread('eight.tif'); imshow(I) level = graythresh(I); BW = im2bw(I,level); imshow(...

plus de 8 ans ago | 0

| accepted

Answered
face-recognition code in matlab
If you have MATLAB R2013a, Then you can find the face detector which comes inbuilt with MATLAB. % Create a cascade detector...

plus de 8 ans ago | 0

Question

kmeans Segmentation Clarification for color images
I had segmented the attached image using kmeans. After kmeans color image segmentation, when I had plotted the cluster centers, ...

plus de 8 ans ago | 2 answers | 0

### 2

answers

Answered
How to count the number of object present in binary image?
You can use |bwconncomp|. cc = bwconncomp(yourBinaryImage,4); number = cc.NumObjects;

plus de 8 ans ago | 4

Problem

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

plus de 8 ans ago | 1 | 223 solvers

Solved

Add two numbers
Given a and b, return the sum a+b in c.

plus de 8 ans ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

plus de 8 ans ago

Solved

Negative matrix
Change the sign of all elements in given matrix.

plus de 8 ans ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

plus de 8 ans ago

Solved

Min of a Matrix
Return the minimum value in the given matrix.

plus de 8 ans ago

Solved

What's Your BMI?
Find the body mass index. For reference, please refer to Wikipedia here: <http://en.wikipedia.org/wiki/Body_mass_index body ...

plus de 8 ans ago

Solved

Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

plus de 8 ans ago

Solved

Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

plus de 8 ans ago

Solved

Determine Whether an array is empty
Input a matrix x, output y is TRUE if x is empty, otherwise FALSE.

plus de 8 ans ago