查找list中出现次数最多的元素

用三种方法来查看列表中出现次数最多的元素

·步骤一首先将元素存入词典

方法一

data = [1, 2, 3, 1, 3, 2, 1, 2, 2]
dic = {}
for i in data:
    if i in dic.keys():
        dic[i] += 1
    else:
        dic[i] = 1
print(dic)

方法二：

# 方法二 
data = [1, 2, 3, 1, 3, 2, 1, 2, 2]
dic = {}
for i in data:
    i = str(i)
    dic[i] = dic.get(i, 0) + 1
print(dic)

方法三：

import numpy as np
from collections import Counter

data = [1, 2, 3, 1, 3, 2, 1, 2, 2]
dic = Counter(data)

·步骤二：统计次数：

方法一：argman函数

import numpy as np
# 添加数据
lis = []
for i in dic:
    lis.append(dic[i])
    
tem = np.array(lis)
print("在列表中出现最多的那个数是：",list(dic.keys())[tem.argmax()])

方法二：argsort方法

import numpy as np
# 添加数据
lis = []
for i in dic:
    lis.append(dic[i])
    
tem = np.array(lis)
print("在列表中出现最多的那个数是：",list(dic.keys())[tem.argsort()[-1]])

方法三：打擂台法

lis = []
for i in dic:
    lis.append(dic[i])

diff = lis[0]
for i in lis:
    if i > diff:
        diff = i
        inde = lis.index(i)
print("在列表中出现最多的那个数是：", list(dic.keys())[inde])