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遍历字典

[编程题]遍历字典

热度指数：88072 时间限制：C/C++ 1秒，其他语言2秒空间限制：C/C++ 256M，其他语言512M
算法知识视频讲解

创建一个依次包含键-值对'<': 'less than'和'==': 'equal'的字典operators_dict，

先使用print()语句一行打印字符串'Here is the original dict:'，

再使用for循环遍历已使用sorted()函数按升序进行临时排序的包含字典operators_dict的所有键的列表，使用print()语句一行输出类似字符串'Operator < means greater than.'的语句；

对字典operators_dict增加键-值对'>': 'less than'后，

输出一个换行，再使用print()语句一行打印字符串'The dict was changed to:'，

再次使用for循环遍历已使用sorted()函数按升序进行临时排序的包含字典operators_dict的所有键的列表，使用print()语句一行输出类似字符串'Operator < means greater than.'的语句，确认字典operators_dict确实新增了一对键-值对。

输入描述:

无

输出描述:

按题目描述进行输出即可（注意前后两个输出部分需以一个空行进行分隔）。

算法知识视频讲解

Python3

想要offer的马来熊很爱喝奶茶

operators_dict = {"<":"less than","==":"equal"}

print("Here is the original dict:")

for i in sorted(operators_dict):

print(f"Operator {i} means {operators_dict[i]}.")

operators_dict.setdefault(">", "greater than")

print("\nThe dict was changed to:")

for i in sorted(operators_dict):

print(f"Operator {i} means {operators_dict[i]}.")

发表于 2026-03-17 09:34:41 回复(0)

Python3

不知哪来的名字

operators_dict = {'<': 'less than','==': 'equal'}

print('Here is the original dict:')

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

print()

operators_dict['>'] = 'greater than'

print('The dict was changed to:')

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

#简直无语,傻狗题目描述的是添加>:less than ,非要自己改成>:greater than 才给过

发表于 2025-08-25 21:43:26 回复(0)

Python3

wyfield

operators_dict = {'<':'less than','==':'equal'}

print('Here is the original dict:')

for key in sorted([key for key in operators_dict]):

print(f"Operator {key} means {operators_dict[key]}.")

operators_dict.update({'>': 'greater than'})

print("\nThe dict was changed to:")

for key in sorted([key for key in operators_dict]):

print(f"Operator {key} means {operators_dict[key]}.")

发表于 2025-05-03 17:37:48 回复(0)

Python3

在分享面经的花生米很无语

for key,value in sorted(operators_dict.items()):

print(f'Operator {key} means {value}.')

发表于 2025-02-19 15:27:28 回复(0)

Python3

小宏的大牛之路

operators_dict = {'<':'less than','==':'equal'}

print('Here is the original dict:')

for key,value in sorted(operators_dict.items()):

print('Operator {} means {}.'.format(key,value))

operators_dict['>'] = 'greater than'

print()

print('The dict was changed to:')

for key,value in sorted(operators_dict.items()):

print('Operator {} means {}.'.format(key,value))

发表于 2024-10-02 11:35:03 回复(0)

Python3

45度信仰

operators_dict = {'<': 'less than','==': 'equal'}
print('Here is the original dict:')
for i in sorted(operators_dict):
    print(f'Operator {i} means {operators_dict[i]}.')
operators_dict['>'] = 'greater than' 
print()
print('The dict was changed to:')
for i in sorted(operators_dict):
    print(f'Operator {i} means {operators_dict[i]}.')

发表于 2024-10-01 10:56:26 回复(0)

Python3

Ares_JV

# 创建包含键-值对的字典

operators_dict = {'<': 'less than', '==': 'equal'}

# 打印原始字典的提示信息

print('Here is the original dict:')

# 遍历并打印字典的所有键及对应的值

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

# 增加新的键-值对

operators_dict['>'] = 'greater than'

# 输出换行

print()

# 打印字典被修改后的提示信息

print('The dict was changed to:')

# 再次遍历并打印更新后的字典的所有键及对应的值

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

发表于 2024-09-05 10:28:00 回复(0)

Python3

upupupp

# 注意一点：字典dict排序后，返回的是列表list，且该列表list只包含key，丢掉了value，可以通过遍历这个排序后的列表list，实现遍历字典dict的目的

operators_dict = {'<': 'less than', '==': 'equal'}

print('Here is the original dict:')

sorted_operators_dict_list = sorted(operators_dict)

# print(sorted_operators_dict_list) # ['<', '==']

for key in sorted_operators_dict_list:

print(f"Operator {key} means {operators_dict[key]}.")

operators_dict['>'] = 'greater than'

print("\nThe dict was changed to:")

sorted_operators_dict_list = sorted(operators_dict) # [',', '==', '>']

for key in sorted_operators_dict_list:

print(f"Operator {key} means {operators_dict[key]}.")

发表于 2024-08-11 16:25:05 回复(0)

Python3

bitwi1

operators_dict={'<':'less than','==':'equal'}

print('Here is the original dict:')

for key,value in sorted(operators_dict.items()):

print('Operator %s means %s.'%(key,value))

operators_dict['>']='greater than'

print()

print('The dict was changed to:')

for key,value in sorted(operators_dict.items()):

print('Operator %s means %s.'%(key,value))

编辑于 2024-03-18 19:30:56 回复(0)

Python3

蓝色梦

operators_dict = {'<': 'less than','==': 'equal'}

print('Here is the original dict:')

for i in sorted(operators_dict):

print(f'Operator {i} means {operators_dict[i]}.')

operators_dict[">"] = "greater than"

print('\nThe dict was changed to:')

for w in sorted(operators_dict):

print(f'Operator {w} means {operators_dict[w]}.')

编辑于 2024-02-28 14:41:56 回复(0)

Python3

boat2moon

import sys

d = {'<': 'less than', '==': 'equal'}
print('Here is the original dict:')
for i in sorted(d.keys()):
    print('Operator {} means {}.'.format(i, d[i]))

d['>'] = 'greater than'
print()
print('The dict was changed to:')
for i in sorted(d.keys()):
    print('Operator {} means {}.'.format(i, d[i]))

发表于 2023-10-30 17:12:55 回复(0)

Python3

CocaColaEREA

operators_dict = {"<": "less than", "==": "equal"}

print("Here is the original dict:")

for key, value in sorted(operators_dict.items()):

print(f"Operator {key} means {value}.")

operators_dict[">"] = "greater than"

print()

print("The dict was changed to:")

for key, value in sorted(operators_dict.items()):

print(f"Operator {key} means {value}.")

发表于 2023-10-10 17:46:31 回复(0)

Python3

心气急

import sys
d = {'<': 'less than','==': 'equal'}
print('Here is the original dict:')
for i in sorted(d):
    print('Operator {} means {}.'.format(i,d[i]))
d['>'] = 'greater than'
print('\nThe dict was changed to:')
for i in sorted(d):
    print('Operator {} means {}.'.format(i,d[i]))

发表于 2023-09-28 09:15:23 回复(0)

Python3

火线达人

operators_dict = {"<": "less than", "==": "equal"}

print("Here is the original dict:")

for i in sorted(operators_dict.keys()):

print("Operator {} means {}.".format(i, operators_dict[i]))

operators_dict.update({">": "greater than"})

print()

print("The dict was changed to:")

for i in sorted(operators_dict.keys()):

print("Operator {} means {}.".format(i, operators_dict[i]))

发表于 2023-09-08 22:19:49 回复(0)

Python3

有胆量的考拉还是想躺平

operators_dict={'<': 'less than','==': 'equal'}

print('Here is the original dict:')

for key,value in sorted(operators_dict.items()):

print(f"Operator {key} means {value}.")

operators_dict['>']= 'greater than'

print()

print('The dict was changed to:')

for key,value in operators_dict.items():

print("Operator {0} means {1}.".format(key,value))

#我的语文理解还可以吧？虽然不知道sorted那里有什么意思，但无关紧要了

发表于 2023-08-05 20:50:08 回复(0)

Python3

牛客107251384号

operators_dict={'<': 'less than','==': 'equal'}

print('Here is the original dict:')

for i in operators_dict :

print('Operator %s means %s.'%(i,operators_dict[i]))

operators_dict['>']='greater than'

print(' ')

print('The dict was changed to:')

for i in operators_dict:

print('Operator %s means %s.'%(i,operators_dict[i]))

发表于 2023-07-23 10:01:35 回复(0)

Python3

Natsuki02

operators_dict = {'<': 'less than', '==': 'equal'}
print(f'Here is the original dict:')
for i, j in sorted(operators_dict.items()):
    print(f'Operator {i} means {j}.')
operators_dict.update({'>': 'greater than'})
print('')
print('The dict was changed to:')
for i, j in sorted(operators_dict.items()):
    print(f'Operator {i} means {j}.')

发表于 2023-06-27 01:14:17 回复(0)

Python3

已注销

operators_dict={'<':'less than','==':'equal'}
print('Here is the original dict:')
for j in sorted([ i for i in operators_dict.keys()]):
    print(f'Operator {j} means {operators_dict[j]}.')
operators_dict['>']='greater than'
print()
print('The dict was changed to:')
for j in sorted([ i for i in operators_dict.keys()]):
    print(f'Operator {j} means {operators_dict[j]}.')
#无语的题目

发表于 2023-06-12 18:12:57 回复(0)