How to find the index of the variable in my For Loop when a condition is met

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Serena Simpson
Serena Simpson 2020-10-2
编辑： Asad (Mehrzad) Khoddam 2020-10-2
I wrote code that itterates element by element of the array 'nr'. Nr has 1000 random numbers. I want to display when two of those random numbers are of the same value, and adjacent. I think that works. I then tried to find the index of the value when it meets the condtion, but it doesnt work. I'm pretty stuck, does anyone have any tips?
for i = 1:length(nr)
if (nr(i)==nr(i+1)) %if a element in the array nr is equal to the
% element above it, then it meets the condition
fprintf("%d is adjacent to a number of equal value", i)
find(nr == i)
end
if i == 1000
break
end
end

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采纳的回答

Asad (Mehrzad) Khoddam
[~,ind] = find(diff(nr)==0)
% print indices
for i = ind
fprintf("%d is adjacent to a number of equal value\n", i)
end

更多回答（1 个）

Asad (Mehrzad) Khoddam
Use
[nf, ind] = find(nr == i);
ind contains the index with the given condition

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