[問題] 巢狀loop減少已回收
因為matlab只要跑超過2個loop就會變得很慢...
for i=1:256
for j=1:256
for k=1:256
if a(j,k)==b(i,1)
b(i,2)=b(i,2)+1;
end
end
end
end
a矩陣：256*256
b矩陣：256*2
假設a矩陣的值等於b(,1)的值，那b(,2)則+1，有什麼方式可以縮減loop嗎？
不然單這一個loop執行就要花30s...感謝
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