Python–字符串中自定义连续字符重复
给定一个字符串，通过字典中映射的数字连续重复字符。
输入 : test_str = 'Geeks4Geeks '，test _ dict = {“G”:3，“e”:1，“4”:3，“k”:5，“s”:3 } T3】输出:gggeekkksss 444 ggeekkkss T6】解释:每个字母按照字典中的值重复。
输入 : test_str = 'Geeks4Geeks '，test _ dict = {“G”:3，“e”:1，“4”:3，“k”:5，“s”:1 } 输出:gggeekkks 444 ggeekkks 解释:每个字母按照字典中的值重复。
方法#1:使用循环
这是执行这项任务的方法之一。在这种情况下，我们迭代每个字符，并检查其重复映射，并重复该数量。
Python 3
# Python3 code to demonstrate working of
# Custom Consecutive character repetition in String
# Using loop
# initializing string
test_str = 'Geeks4Geeks'
# printing original string
print("The original string is : " + str(test_str))
# initializing dictionary
test_dict = {"G" : 3, "e" : 2, "4" : 4, "k" : 5, "s" : 3}
res = ""
for ele in test_str:
# using * operator for repetition
# using + for concatenation
res += ele * test_dict[ele]
# printing result
print("The filtered string : " + str(res))
Output
The original string is : Geeks4Geeks
The filtered string : GGGeeeekkkkksss4444GGGeeeekkkkksss
方法 2:使用列表理解+连接()
这是执行这项任务的另一种方式。在这种情况下，我们执行与上述功能类似的任务。唯一的区别是我们使用 join()来合并创建的重复列表。
Python 3
# Python3 code to demonstrate working of
# Custom Consecutive character repetition in String
# Using list comprehension + join()
# initializing string
test_str = 'Geeks4Geeks'
# printing original string
print("The original string is : " + str(test_str))
# initializing dictionary
test_dict = {"G" : 3, "e" : 2, "4" : 4, "k" : 5, "s" : 3}
# using join to perform concatenation of strings
res = "".join([ele * test_dict[ele] for ele in test_str])
# printing result
print("The filtered string : " + str(res))
Output
The original string is : Geeks4Geeks
The filtered string : GGGeeeekkkkksss4444GGGeeeekkkkksss
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