[英]How do I find the smallest, largest value and total and the average in a 2D list that the user provides in python?
如何在用户在python中提供的2D列表中找到最小,最大值和总数以及平均值?
您可以先将其展平。
a = [[1, 2], [3, 4]]
flattened = [num for sublist in a for num in sublist]
min_val = min(flattened)
max_val = max(flattened)
sum_val = sum(flattened)
avg_val = sum(flattened) / len(flattened)
因此,在您的情况下,它将是:
def list_stats(a):
flattened = [num for sublist in a for num in sublist]
min_val = min(flattened)
max_val = max(flattened)
sum_val = sum(flattened)
avg_val = sum_val / len(flattened)
return min_val, max_val, sum_val, avg_val
#Testing
a = [[1.2,3.5],[5.5,4.2]]
small, large, total, average = list_stats(a)
这是我到目前为止所拥有的:
a = [[]]
total = 0
counter = 0
small = a[0][0]
for i in a:
if i > small:
return True
total += i
counter += 1
average = total / counter
return small, large, total, average
#Testing
a = [[1.2,3.5],[5.5,4.2]]
small, large, total, average = list_stats(a)
我收到以下两个错误:小,大,总计,平均值= list_stats(a)小= a [0] [0] IndexError:列表索引超出范围
未定义函数list_stats
。
a = [[]]
是包含空列表的列表。 a[0][0]
是不存在的元素。
尝试这个:
def list_stats(a):
total = 0
counter = 0
small = 99999
large = -999
for x in a:
for y in x:
if y < small:
small = y
if y > large:
large = y
counter += 1
total += y
average = total / counter
return small, large, total, average
我更喜欢Eric的答案
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