Question

4) Write a function leadzero(v) which takes as input a vector v and as output, c, returns the number of zeros at the beginning of v (number of zero elements before any non-zero element). For example, for input (-5, 5, 11] the output would be 0. If the input is [0, 0, 3, 0, 0, 0], the output would be 2. If the input is [0, 0, 0, 0, 7, 4) the output would be 4. 5) Write a function countnon(A) which takes as input a matrix A and as output returns the number, c, of non-zero elements in A. For example, if the input is [1, 0, 3; 0, 0, 5], the output would be 3. If the input is [1, 2, 3; 4, 0, 6), the output would be 5.

Matlab code

Answer 1

4) Code:-

function c = leadzero(v)
c=0; %Intialize c to zero
for x=v %Iterate through the vector
if x==0 % check if the element is zero
c=c+1; %Increment c
else
break; % Break the loop if condition fails   
end
end
end
  

leadzero.m E function c = leadzero (v) c=0; %Intialize c to zero Iterate through the vector for x=v * check if the element is zero if x==0 4 c=c+1; %Increment c else * Break the loop if condition fails break; 8. end end 10 end 11 12 13

  

Command Window 'Input the vector >> prompt = v=input (prompt); count= leadzero (v) Input the vector [-5,5,11] count = >> 'Input the vector '; prompt v=input (prompt); count= leadzero (v) Input the vector [0,0,3,0,0,0] count 'Input the vector '; >> prompt = v=input (prompt); count= leadzero (v) Input the vector [0,0,0,0,7,4] count = fx

5) Code:-

function c = countnon(A)
c=0; %Intialize c to zero
for idx = 1:numel(A) %iterate through the matrix
if A(idx) ~=0 %check if element is not zero
c=c+1; %increment c
end   
end
end
  

countnon.m function c - countnon (A) SIntialize c to zero c=0; for idx = 1:nume1 (A) 3 šiterate through the matrix if A(idx) -=0 Scheck if element is not zero c=c+1; Sincrement c end end end 10 | 11

  

Command Window 'Input the matrix'; >> prompt = A=input (prompt); c= countnon (A) Input the matrix [1,0,3;0,0,5] >> prompt = 'Input the matrix A=input (prompt); c= countnon (A) Input the matrix [1,2,3;4,0,6]

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