Index exceeds error in second run

Hello , I am writing this code. It runs first time perfectly but second time it shows the error:

Index exceeds matrix dimensions.
Error in tr1 (line 61)
child(i)=citi_no(I)

my code is :

clc;
clear all;
close all;
P1= [5 2 1 4 3];
P2= [4 5 1 2 3];
for i=1:5
    c=1;
    a=find(P1==i);
    if a<5 && a>1
        u=P1(a-1);
        v=P1(a+1);
    elseif a==5
        u=P1(a-1);
        v=P1(1);
    else
        u=P1(5);
        v=P1(a+1);
    end
    edge_table{i}(c)=u;
    edge_table{i}(c+1)=v;
    c=c+1;
    b=find(P2==i);
    if b<5 && b>1
        x=P2(b-1);
        y=P2(b+1);
    elseif b==5
        x=P2(b-1);
        y=P2(1);
    else
        x=P2(5);
        y=P2(b+1);
    end
    if max(ismember(edge_table{i},x))==0
        edge_table{i}(c+1)=x;
        c=c+1;
    end
    if max(ismember(edge_table{i},y))==0
        edge_table{i}(c+1)=y;
    end
    citi_no(i)=i;
    list_size(i)=length(edge_table{i});
end
idx=find(list_size==max(list_size));
chose=randi(length(idx),1);
I=idx(chose);
child(1)=citi_no(I);
for i=2:5
    citi_no(I)=[];
edge_table{I}=[];
edge_table=edge_table(~cellfun('isempty',edge_table));
for j=1:numel(edge_table)
    if max(ismember(edge_table{j},I))==1
        d=find(edge_table{j}==I);
        edge_table{j}(d)=[];
    end
    new_size(j)=length(edge_table{j});
end
id=find(new_size==min(new_size));
Next=randi(length(id),1);
I=id(Next);
child(i)=citi_no(I)
end

I could not find the problem.

[per isakson]

My test ends with that error when the value of I is 3 and the length of citi_no is 2

• See Debug a MATLAB Program
• See Examine Values While Debugging

Answer 1

[Brinta Chowdhury]

Hey thanks. I found the problem just after I post the question here and fixed it already. Anyways thanks for your help.