Bug: vector out of range

[tina123]

I have two vectors
cpyH, hist of size 180.

I am performing smoothing

for(int i = 1; i < hist.size() -1; i++)
{
hist[i] = ( cpyH[i-1] + cpyH[i] + cpyH[i+1] )/3;
}

If i = 178 then it would be 178 < 179

so hist[178] = ( cpyH[177] + cpyH[178] + cpyH[179] )/3;

when i = 179 < 179, condition false, then loop should end.
but i get bug, vector is out of range. . Why is that so?

[cire]

My guess is that your assumption that cpyH and hist are of the same size is not correct.

[tina123]

Both are of same size. I checked by putting break points.

[naraku9333]

If

so hist[178] = ( cpyH[177] + cpyH[178] + cpyH[179] )/3

then

so hist[179] = ( cpyH[178] + cpyH[179] + cpyH[180] )/3

Edit: Nevermind, I missed the -1.