Question

Rens Courses LMS Integration Documentation SP20 - EE202 - Seco3 - HWS > HW Assignment 6 > & HW6 - Problem 3 - Chapter 6 Problem 26 1 solution submitted (max: 3) View my solutions Chapter 6 Problem 26 Write a MATLAB program in a script file that finds a positive integer n such that the sum of all integers 1+ 2+ 3+ ... +n is a number between 100 and 1000 whose three digits are identical. As output, the program displays the integer n and the corresponding sum. Script C Reset DI MATLAB Documen 1 -1% assign the value of n to this variable. 2 total = n=1;a=;s=; while a & scieee <=n (n+1)/ : if 188cs & scieee denumstr(s); if (1,1)==d(1,2) & d(1,2)- (1,3) fprintf("the integer is si and the sun is i\n',,s) end end nene1: 12 ends assign the value for the corresponding sun associated with n to this variable 14 x Display n and the corresponding sun within strings that describe the output. Run Script Submit (Attempt 2 of 3) Previous Assessment: 0 of 3 Tests Passed (0%) 0 (34) 00 PM CheP28.n

Answer 1

Solution:

Matlab script is implemented and tested for fnding the sum of n positive integers and all the digits in the sum are equal or not between 100 and 1000.

The following points are considered in the implementation.

1. Script is for entering the positive integer or not.

2. If entered value is not positive integer, program is terminated.

3. Finding the sum of n integers and computed whether the digits are same.

Matlab Script:

% This matlab script is for finding the sum of n integer values
% whether all digits are equal or not between sum values 100 and 1000
clear all;
clc;
%enter the number positive integer only
num = input('enter positive integer only:');
%finding the entered number is positive integer or not
inte_or_not = @(n) (rem(n,1)==0)&(n>0);
res = inte_or_not(num);
if(res == 1)
disp('Entered value is a Positive integer');
sum = 0;
for i=1:num
sum = sum + i;
end
disp('Sum of n integers:');
disp(sum);
%finding all 3 digits are same or not
d = num2str(sum); %separating digits
N = length(d); %finding length
if(N == 3)
if(d(1,1) == d(1,2) && d(1,2) == d(1,3)) %%checking all digits are same or not
disp('The sum value has all same digits:'); %display
disp(sum); % display sum vaues
end
end
else
disp('Entered value is not a Positive integer');
end
%getting the sum of n integers
%%%%%%%%end of program

Results:

enter positive integer only:36
Entered value is a Positive integer
Sum of n integers:
666

The sum value has all same digits:
666

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