找出数组中与其他元素不同的元素
There is an array with some numbers. All numbers are equal except for one. Try to find it!
find_uniq([1,1,1,2,1,1])==2find_uniq([0,0,0.55,0,0])==0.55
It’s guaranteed that array contains at least 3 numbers.
The tests contain some very huge arrays, so think about performance.
This is the first kata in series:
Find the unique number (this kata)
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answer:
def find_uniq(arr):
# your code here
n=0
for i in arr:
if arr.count(i) ==1:
n=n+i
return n # n: unique integer in the array
