Problem: The task is to form a group of characters and print them in a specific order.
Given string: “HeLloOWorLDd”
(In order they appear in the string)
Group d -> Dd
Group l -> LlL
Group h ->
Group r -> r
Group o -> oOo ……..etc. Then arrange the Group in ascending order.
Explanation:
Sample Input:
HeLloOWorLDd
Sample Output:
DdWerHoOoLlL
Solution: We strongly recommend you to try the problem first before moving to the solution.
Python
# Code to understand Concatenation of Alphabetical group in Python
# www.codewindow.in
str_list=list(input())
char_list=[]
for i in range (len(str_list)):
if str_list[i]=='':
continue
char_grp=str_list[i]
for j in range (i+1, len(str_list)):
if str_list[i].lower()==str_list[j].lower():
char_grp += str_list[j]
str_list[j]=''
str_list[i]=''
char_list.append(char_grp)
for i in range (len(char_list)):
for j in range (i+1, len(char_list)):
if char_list[i].lower() > char_list[j].lower():
temp=char_list[j]
char_list[j]=char_list[i]
char_list[i]=temp
length=len(char_list)
for i in range (length//2):
print(char_list[i]+char_list[length-i-1], end='')
if length%2!=0:
print(char_list[length//2])
Input:
HeLloOWorLDd
Output:
DdWerHoOoLlL
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