Question

MATLAB QUESTION

3. Write function called huge add that adds together two positive integers of any length specified as strings using decimal notation. The single output argument is the result and it is a string as well. The inputs and output must contain digits only; no commas, spaces or any other characters are allowed. If any of these assumptions are violated by the input, the function returns the number-1.

function Huge_Add = huge_add(number1,number2)

sum= number1 + number2;

sprintf(' %+5.2d',sum)

end

Answer 1

Here is the code for you:

function output = Huge_Add(string1, string2)

index1 = length(string1);

index2 = length(string2);

output = '';

carry = 0;

while(index1 ~= 0 && index2 ~= 0)

   [digit1, status] = str2num(string1(index1));

   if(status == 0)

   output = -1;

   return;

   end

   [digit2, status] = str2num(string2(index2));

   if(status == 0)

   output = -1;

   return;

   end

   sum = digit1 + digit2 + carry;

   if(sum > 9)

   carry = 1;

   output = strcat(num2str(sum - 10), output);

   else

   carry = 0;

   output = strcat(num2str(sum), output);

   end

   index1 = index1 - 1;

   index2 = index2 - 1;

end

while(index1 ~= 0)

[digit1, status] = str2num(string1(index1));

   if(status == 0)

   output = -1;

   return;

   end

   sum = digit1 + carry;

   if(sum > 9)

   carry = 1;

   output = strcat(num2str(sum - 10), output);

   else

   carry = 0;

   output = strcat(num2str(sum), output);

   end

   index1 = index1 - 1;

end

while(index2 ~= 0)

[digit2, status] = str2num(string2(index2));

   if(status == 0)

   output = -1;

   return;

   end

   sum = digit2 + carry;

   if(sum > 9)

   carry = 1;

   output = strcat(num2str(sum - 10), output);

   else

   carry = 0;

   output = strcat(num2str(sum), output);

   end

   index2 = index2 - 1;

end

if(carry == 1)

   output = strcat('1', output);

end

And the output screenshot is:

《 MATLAB Window Help b g < >しー_ー))) 100% E) Fri 2 Sep 11:58 ANANDA UMMAPUDI Q E Editor - Users/AnandaKumarThummapudi/Documents/MATLAB/Huge Add.m EDITOR 52DB: Find Files Insert Ed fx Fal ▼ Elzb Run Section El Compare Comment 90 e CoTo BreakpointsRun Run and Run and TimeAdvance Advance ew ave Indent Find NAVIGATE bleSort.m Palindrome.m PlotEquation.m HyphenatedString.m dvowels.m carry = u; output strcat(num2str(sum), output): end index1 = index1-1; MATLAB R2013a while(indexl - 0) [digitl, status] HOME RE② Search Documentation if(status0) outputl return; Analyze Code Open Compare Import Save Open VariableRun and Time @Preferences (?) 스c Request Support link Layout Parallel Add-ons ▼ if (sum > 9) carry = 1; output st VARIABLE CODE SIMULINK ENVIRONMENT ← →困泗ー/> Users AnandaKumarThummapudí Documents MATLAB carry -0Current Folder O output = str ommand Window Workspace Name Name New to MATLAB? watch this Video, see Examples, or read Getting Started end indexi index 1 | 3Dcurves 443 Wizards >Huge_Add( 9999999999", 1') while(index2 0)3DParametr... [digite,zstatus ]| A6.dat if(status0) 10000000000 outputl return; Address Lab AlgebraicEx amortizatio... Arbitrary! nt… Array2DCre... Array3DMa. .. ArrayManip.m ArrayStats.m ArraySumln >Huge_Add('1', 1 sum digit2+ if(sum > 9) carry = 1; output st Command History >Huge_Add('21', '19 Huge_Add('12','19" Huge_Add ( 9999999999" carry output = str end index2 - index21 Raskac res.m Huge_Add 9999999999 40 end if (carry1) Huge_Add( 9999999999" Huge_Add('1', '1' Huge_Add('21','19 Automobile 61 outputstrcat

If you need any refinements, just get back to me.