[問題] 程式執行次數
for i <- 1 to n do
j <- i
for k <- (j+1) to n do
x <- x+1
end
end
問這程式的執行次數為多少?
我一開始用直覺是認為 n平方 不過第二行有穿插 j <- i,該如何分析呢?
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