"Su Y" <[EMAIL PROTECTED]> wrote: > I want find the first number in extend[] which is larger than num, so > I wrote: > def find(num): > count=0 > for elem in extend: > if elem<num: > count+=1 > return count > > I found that if extend[] is monotonous, like [1.1, 2.3, 3.2, 4.5, > 5.6], > it works fine: find(4) returns 3, extend[3] is 4.5. > But, if extend[] is not monotonous, like [1.1, 2.3, 3.2, 4.5, 5.6, > 4.6, 3.4, 2.1, 0.3], > find(4) returns 6, extend[6] is 3.4! > > what's going on here? I really can't understand....
Hint: extend[0] is1.1 Hint: extend[7] is 2.1 Hint: 2.1 is less than 4 You have to stop counting and come out of the loop when you find the first one - what your function is doing is counting the elements less than num, not finding the first one that is. hth - Hendrik
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