[num,len] = size(y)

Initialize all the distance of individuals as zero.

for i = 1 : M

for j = 2 : num - 1

distance(j).individual = 0

-[num,len] = size(y)

　Initialize all the distance of individuals as zero.

for i = 1 : M

　　for j = 2 : num- 1

　　　　distance(j).individual = 0