updated string sub domain solutions - partial

Author: arsho

Introduction/ReadingRawInput.py

@@ -0,0 +1,10 @@
+'''
+Title     : Reading Raw Input
+Subdomain : Introduction
+Domain    : Python
+Author    : Ahmedur Rahman Shovon
+Created   : 15 July 2016
+'''
+# Enter your code here. Read input from STDIN. Print output to STDOUT
+name=raw_input()
+print name

Strings/DesignerDoorMat.py

@@ -1,14 +1,14 @@
-'''
+"""
 Title     : Designer Door Mat
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
 Problem   : https://www.hackerrank.com/challenges/designer-door-mat/problem
-'''
-N, M = map(int,input().split()) # More than 6 lines of code will result in 0 score. Blank lines are not counted.
-for i in range(1,N,2): 
-    print(int((M-3*i)/2)*'-'+(i*'.|.')+int((M-3*i)/2)*'-')
-print(int((M-7)/2)*'-'+'WELCOME'+int((M-7)/2)*'-')
-for i in range(N-2,-1,-2): 
-    print(int((M-3*i)/2)*'-'+(i*'.|.')+int((M-3*i)/2)*'-')
+"""
+N, M = map(int, input().split())
+for i in range(1, N, 2):
+    print(int((M - 3 * i) / 2) * '-' + (i * '.|.') + int((M - 3 * i) / 2) * '-')
+print(int((M - 7) / 2) * '-' + 'WELCOME' + int((M - 7) / 2) * '-')
+for i in range(N - 2, -1, -2):
+    print(int((M - 3 * i) / 2) * '-' + (i * '.|.') + int((M - 3 * i) / 2) * '-')

Strings/Findastring.py

@@ -1,19 +1,24 @@
-'''
+"""
 Title     : Find a string
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
 Problem   : https://www.hackerrank.com/challenges/find-a-string/problem
-'''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-s=raw_input()
-ss=raw_input()
-cnt=0
-len_s=len(s)
-len_ss=len(ss)
-for i in range(0,len_s):
-    tmp=s[i:i+len_ss]
-    if(tmp==ss):
-        cnt=cnt+1
-print cnt
+"""
+
+
+def count_substring(string, sub_string):
+    count_sub_string = 0
+    for i in range(len(string) - len(sub_string) + 1):
+        if string[i:i + len(sub_string)] == sub_string:
+            count_sub_string += 1
+    return count_sub_string
+
+
+if __name__ == '__main__':
+    string = input().strip()
+    sub_string = input().strip()
+
+    count = count_substring(string, sub_string)
+    print(count)

Strings/Mutations.py

@@ -1,12 +1,22 @@
-'''
+"""
 Title     : Mutations
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
-Updated   : 25 October 2019
+Updated   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-mutations/problem
-'''
+"""
+
+
 def mutate_string(string, position, character):
-    return string[:position]+character+string[position+1:]
+    chars = list(string)
+    chars[position] = character
+    return "".join(chars)
+
 
+if __name__ == '__main__':
+    s = input()
+    i, c = input().split()
+    s_new = mutate_string(s, int(i), c)
+    print(s_new)

Strings/StringSplitandJoin.py

@@ -1,10 +1,18 @@
-'''
+"""
 Title     : String Split and Join
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-string-split-and-join/problem
-'''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-print "-".join(raw_input().strip().split())
+"""
+
+
+def split_and_join(sentence):
+    return "-".join(sentence.split())
+
+
+if __name__ == '__main__':
+    line = input()
+    result = split_and_join(line)
+    print(result)

Strings/StringValidators.py

@@ -1,32 +1,33 @@
-'''
+"""
 Title     : String Validators
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
+Updated   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/string-validators/problem
-'''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-inputStr=input()
-resalnum = False
-resalpha = False
-resdigit = False
-reslower = False
-resupper = False
-for i in inputStr:
-    if(i.isalnum()):
-        resalnum=True
-    if(i.isalpha()):
-        resalpha=True
-    if(i.isdigit()):
-        resdigit=True
-    if(i.islower()):
-        reslower=True
-    if(i.isupper()):
-        resupper=True
-    
-print(resalnum)
-print(resalpha)
-print(resdigit)
-print(reslower)
-print(resupper)
+"""
+if __name__ == '__main__':
+    s = input()
+    flag_alnum = False
+    flag_alpha = False
+    flag_digit = False
+    flag_lower = False
+    flag_upper = False
+    for i in s:
+        if i.isalnum():
+            flag_alnum = True
+        if i.isalpha():
+            flag_alpha = True
+        if i.isdigit():
+            flag_digit = True
+        if i.islower():
+            flag_lower = True
+        if i.isupper():
+            flag_upper = True
+
+    print(flag_alnum)
+    print(flag_alpha)
+    print(flag_digit)
+    print(flag_lower)
+    print(flag_upper)

Strings/TextAlignment.py

@@ -1,32 +1,33 @@
-'''
+"""
 Title     : Text Alignment
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
+Updated   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/text-alignment/problem
-'''
-#Replace all ______ with rjust, ljust or center. 
+"""
 
-thickness = int(input()) #This must be an odd number
+thickness = int(input())
 c = 'H'
 
-#Top Cone
+# Top Cone
 for i in range(thickness):
-    print((c*i).rjust(thickness-1)+c+(c*i).ljust(thickness-1))
+    print((c * i).rjust(thickness - 1) + c + (c * i).ljust(thickness - 1))
 
-#Top Pillars
-for i in range(thickness+1):
-    print((c*thickness).center(thickness*2)+(c*thickness).center(thickness*6))
+# Top Pillars
+for i in range(thickness + 1):
+    print((c * thickness).center(thickness * 2) + (c * thickness).center(thickness * 6))
 
-#Middle Belt
-for i in range((thickness+1)//2):
-    print((c*thickness*5).center(thickness*6))    
+# Middle Belt
+for i in range((thickness + 1) // 2):
+    print((c * thickness * 5).center(thickness * 6))
 
-#Bottom Pillars
-for i in range(thickness+1):
-    print((c*thickness).center(thickness*2)+(c*thickness).center(thickness*6))    
+# Bottom Pillars
+for i in range(thickness + 1):
+    print((c * thickness).center(thickness * 2) + (c * thickness).center(thickness * 6))
 
-#Bottom Cone
+# Bottom Cone
 for i in range(thickness):
-    print(((c*(thickness-i-1)).rjust(thickness)+c+(c*(thickness-i-1)).ljust(thickness)).rjust(thickness*6))  
+    print(((c * (thickness - i - 1)).rjust(thickness) + c + (c * (thickness - i - 1)).ljust(thickness)).rjust(
+        thickness * 6))

Strings/TextWrap.py

@@ -1,12 +1,20 @@
-'''
+"""
 Title     : Text Wrap
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
+Updated   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/text-wrap/problem
-'''
+"""
 import textwrap
-s = input()
-w = int(input().strip())
-print(textwrap.fill(s,w))
+
+
+def wrap(string, max_width):
+    return textwrap.fill(string, max_width)
+
+
+if __name__ == '__main__':
+    string, max_width = input(), int(input())
+    result = wrap(string, max_width)
+    print(result)

Strings/WhatsYourName.py

@@ -1,12 +1,18 @@
-'''
+"""
 Title     : Whats Your Name?
 Subdomain : Introduction
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
 Problem   : https://www.hackerrank.com/challenges/whats-your-name/problem
-'''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-fname=raw_input()
-lname=raw_input()
-print "Hello "+fname+" "+lname+"! You just delved into python."
+"""
+
+
+def print_full_name(a, b):
+    print("Hello {} {}! You just delved into python.".format(a, b))
+
+
+if __name__ == '__main__':
+    first_name = input()
+    last_name = input()
+    print_full_name(first_name, last_name)

Strings/sWAPcASE.py

@@ -1,19 +1,27 @@
-'''
+"""
 Title     : sWAP cASE
 Subdomain : Strings
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 16 July 2016
+Updated   : 08 July 2020
 Problem   : https://www.hackerrank.com/challenges/swap-case/problem
-'''
-__author__ = 'arsho'
-def swap_case(s):
-    newstring = ""
-    
-    for item in s:
-        if item.isupper():
-            newstring += item.lower()
+"""
+
+
+def swap_case(sentence):
+    updated_s = ""
+    for c in sentence:
+        if c.isupper():
+            updated_s += c.lower()
+        elif c.islower():
+            updated_s += c.upper()
         else:
-            newstring += item.upper()
-            
-    return newstring
+            updated_s += c
+    return updated_s
+
+
+if __name__ == '__main__':
+    s = input()
+    result = swap_case(s)
+    print(result)