Summation by using loops and cells

Question

Jeet kUN 2018-11-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/431648-summation-by-using-loops-and-cells

编辑： madhan ravi 2018-11-24

采纳的回答： madhan ravi

K=9;

L Range of M (for each L)

0.5 2 6 8 10 12 14 16

1 2 6 8

1.5 2 6 8 10 12

2 2 6 8 10

2.5 2 6 8 10

3 2 6 8 10 12 14 16

I have a constant parameter say K. Now for different range of L (0.5:0.5:3), I have different values of M, as seen in the table.

I need to carry a summation operation using 'for loops' such that:

sum=(K*0.5*2)+(K*0.5*6)+(K*0.5*8)+.................+ (second line)......+ (sixth line)+ (K*3*16)

[Note: In '(K*0.5*2)' , 0.5 is the first element of L, and 2 is the first value of M for that particular L ]

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madhan ravi 2018-11-24

upload the datas instead of pic

Jeet kUN 2018-11-24

The datas are also uploaded along with the pic. Thanks.

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Answer 1

madhan ravi 2018-11-24

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/431648-summation-by-using-loops-and-cells#answer_348636

编辑：madhan ravi 2018-11-24

在 MATLAB Online 中打开

Looks nasty although there are efficient solutions which avoids loop:

K=9;
L =0.5:0.5:3;         
M{1}=[2 6 8 10 12 14 16];
M{2}=[2 6 8];
M{3}=[2 6 8 10 12];
M{4}=[2 6 8 10];
M{5}=[2 6 8 10];
M{6}=[2 6 8 10 12 14 16];
n=numel(L);
sums=cell(1,n);
for i = 1:n
sums{i}=sum(K.*L(i).*[M{i}]);
end
    
celldisp(sums) %each cell corresponds to each L and it's M ranges

command window:

>> COMMUNITY
 
sums{1} =
 
   306 
 
sums{2} =
 
   144
 
sums{3} =
 
   513
sums{4} =
 
   468
 
sums{5} =
 
   585
 
sums{6} =
 
   1836
 
>>

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Jeet kUN 2018-11-24

Hi, apology for the last image attached which didnot showed the various values of M (for a particular L). I need to use 'for loop' here. The updated image is attached.

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