1.已知一個(gè)數(shù)字列表逐哈，求列表中心元素芬迄。

print("=============第1題=============")
nums = [1,2,3,4,5,6]
lenth = len(nums)
if lenth %2 == 0:
    print(nums[int(lenth/2-1)],nums[int(lenth/2)])
else:
    print(nums[lenth//2])

2.已知一個(gè)數(shù)字列表，求所有元素和昂秃。

print("=============第2題=============")
nums = [1,2,3,4,5,6]
print(sum(nums))

3.已知一個(gè)數(shù)字列表禀梳，輸出所有奇數(shù)下標(biāo)元素择诈。

print("=============第3題=============")
nums = [1,2,3,4,5,6]
lenth = len(nums)
for index in range(lenth):
    if index % 2 == 1:
        print(nums[index],end=",")
print()

4.已知一個(gè)數(shù)字列表，輸出所有元素中出皇，值為奇數(shù)的元素。

print("=============第4題=============")
nums = [1,2,3,4,5,6]
for num in nums:
    if num % 2 == 1:
        print(num,end=",")
print()

5.已知一個(gè)數(shù)字列表哗戈，將所有元素乘二郊艘。

print("=============第5題=============")
nums = [1,2,3,4,5,6]
new_nums = []
for num in nums:
    num *= 2
    new_nums.append(num)
print(new_nums)

6.有一個(gè)長(zhǎng)度是10的列表，數(shù)組內(nèi)有10個(gè)人名唯咬，要求去掉重復(fù)的

例如:names = ['張三', '李四', '大黃', '張三'] -> names = ['張三', '李四', '大黃']

print("=============第6題=============")
name_list = ["陳泓羽","張三","李四","大黃","張三","李四","王二","麻子","李四","陳泓羽"]
newname_list = []
for name in name_list:
    if name not in newname_list:
        newname_list.append(name)
print(newname_list)

7.已知一個(gè)數(shù)字列表(數(shù)字大小在0~6535之間), 將列表轉(zhuǎn)換成數(shù)字對(duì)應(yīng)的字符列表

例如: list1 = [97, 98, 99] -> list1 = ['a', 'b', 'c']

print("=============第7題=============")
list1=[1,2,3,55,68,100,121,231]
new_list = []
for item in list1:
    new_list.append(chr(item))
print(new_list)

8.用一個(gè)列表來(lái)保存一個(gè)節(jié)目的所有分?jǐn)?shù)纱注，求平均分?jǐn)?shù)(去掉一個(gè)最高分，去掉一個(gè)最低分胆胰，求最后得分)

print("=============第8題=============")
list1 = [98,80,56,78,23,95,99,90,92]
max1 = max(list1)
min1 = min(list1)
list1.remove(max1)
list1.remove(min1)
sum1 = sum(list1)
average = sum1/len(list1)
print(average)

9.有兩個(gè)列表A和B狞贱，使用列表C來(lái)獲取兩個(gè)列表中公共的元素

例如: A = [1, 'a', 4, 90] B = ['a', 8, 'j', 1] --> C = [1, 'a']

print("=============第9題=============")
A = [1, 'a', 4, 90]
B = ['a', 8, 'j', 1]
C = []
for item in A:
    if item in B:
        C.append(item)
print(C)

10.有一個(gè)數(shù)字列表，獲取這個(gè)列表中的最大值.(注意: 不能使用max函數(shù))

例如: nums = [19, 89, 90, 600, 1] —> 600

print("=============第10題=============")
nums = [19, 89, 90, 600, 1]
max1 = nums[0]
for num in nums:
    if num > max1:
        max1 = num
print(max1)

11.獲取列表中出現(xiàn)次數(shù)最多的元素

例如：nums = [1, 2, 3,1,4,2,1,3,7,3,3] —> 打印:3

print("=============第11題=============")
nums = [1, 2, 3,1,4,2,1,3,7,3,3]
new_num = []
max1 = nums.count(nums[0])
for num in nums:
    if nums.count(num) > max1:
        max1 = nums.count(num)
for num in nums:
    if nums.count(num) == max1 and num not in new_num:
        new_num.append(num)
print(new_num)