用python写下方的代码,下方函数求得一个列表numbers中的众数,思路如下:1)用count()计算列表 numbers中每个元素出现的次数2)将上述元素和对应的出现次数存入字典,count_num中;3)用max()找到count_num中最大的值,并找到拥有该值的字典键添加到max_count_num中; 4)max_count_num中的元素就是众数,count_num 是众数 出现的次数。
时间: 2023-06-04 12:04:58 浏览: 141
用python一行代码得到数组中某个元素的个数方法
以下是Python代码实现:
def find_mode(numbers):
count_num = {}
max_count_num = []
max_count = 0
for num in numbers:
if num in count_num:
count_num[num] += 1
else:
count_num[num] = 1
for key, value in count_num.items():
if value > max_count:
max_count = value
max_count_num = [key]
elif value == max_count:
max_count_num.append(key)
return max_count_num, max_count
# 示例使用
numbers_example = [1, 2, 2, 3, 4, 4, 4]
mode, count = find_mode(numbers_example)
print(f"The mode of {numbers_example} is {mode}, and it appears {count} times.")
# 输出:The mode of [1, 2, 2, 3, 4, 4, 4] is [4], and it appears 3 times.
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