打印列表中最大偶数和最大奇数的Python程序

给出一个列表。任务是打印列表中最大的偶数和最大的奇数。

例子：

Input: 1 3 5 8 6 10 
Output:
Largest even number is  10 
Largest odd number is  5

Input: 123 234 236 694 809
Output:
Largest odd number is  809
Largest even number is  694

第一种方法使用两种方法，一种用于计算用户输入的最大偶数，另一种用于计算数字列表中最大的奇数。每种方法分别打印最大的偶数和奇数。我们为每种方法维护一个计数器，用于当前最大的偶数或奇数，并检查该数字是否可以被 2 整除。因此，我们打印最大值。

Python3

class LargestOddAndEven:
   
    # find largest even number of
    # the list
    def largestEven(self, list):
         
        # counter for current largest
        # even number
        curr = -1
         
        for num in list:
           
            # converting number to integer
            # explicitly
            num = int(num)
             
            # even number is divisible by 2 and
            # if larger than current largest
            if(num % 2 == 0 and num > curr):
               
                # replace current largest even
                curr = num
 
        print("Largest even number is ", curr)
 
    # find largest odd number of the list
    def largestOdd(self, list):
       
        # current largest odd number
        currO = -1
        for num in list:
           
            # converting number to integer
            # explicitly
            num = int(num)
             
            # even number is divisible by 2 and
            # if larger than current largest
            if(num % 2 == 1 and num > currO):
                 
                # replace current largest even
                currO = num
 
        print("Largest odd number is ", currO)
 
list_num = [1, 3, 5, 8, 6, 10]
 
# creating an object of class
obj = LargestOddAndEven()
 
# calling method for largest even number
obj.largestEven(list_num)
 
# calling method for largest odd number
obj.largestOdd(list_num)

输出：

Largest even number is  10
Largest odd number is  5

第二种方法使用第一种方法的优化版本，其中我们计算一个方法本身的最大值。我们仍然维护两个计数器，但是迭代列表的 for 循环只运行一次。

蟒蛇3

class LargestOddAndEven:
   
    # find largest even number of the list
    def largestEvenandOdd(self, list):
         
        # counter for current largest even
        # number
        curr = -1
         
        # counter for current largest odd
        # number
        currO = -1
        for num in list:
             
            # converting number to integer
            # explicitly
            num = int(num)
             
            # even number is divisible by 2 and
            # if larger than current largest
            if(num % 2 == 0 and num > curr):
                 
                # replace current largest even
                curr = num
             
            elif(num % 2 == 1 and num > currO):
                 
                # replace current largest even
                currO = num
 
        print("Largest odd number is ", currO)
        print("Largest even number is ", curr)
 
 
# input a list of numbers
list_num = [123, 234, 236, 694, 809]
 
# creating an object of class
obj = LargestOddAndEven()
 
# calling method for largest even and odd number
obj.largestEvenandOdd(list_num)

输出：

Largest odd number is  809
Largest even number is  694

方法 3：在Python中使用 list Comprehension 和 max函数：

• 使用列表推导将偶数和奇数存储在单独的列表中。
• 打印相应列表的max() 。

下面是上述方法的实现：

蟒蛇3

# Python program for the above approach
 
def printmax(lis):
   
    # Using list comprehension storing
    # even and odd numbers as separate lists
    even = [x for x in lis if x % 2 == 0]
    odd = [x for x in lis if x % 2 == 1]
 
    # printing max numbers in corresponding lists
    print("Largest odd number is ", max(odd))
    print("Largest even number is ", max(even))
 
 
# Input a list of numbers
lis = [123, 234, 236, 694, 809]
 
printmax(lis)
 
# This code is contributed by vikkycirus

输出：

Largest odd number is  809

Largest even number is  694