Merge pull request #24 from arsho/feature/python3

Feature/python3

Author: arsho

BasicDataTypes/Findingthepercentage.py

@@ -3,20 +3,16 @@
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/finding-the-percentage/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-n=int(input())
-ar={}
-for i in range(0,n):
-    s=input()
-    ss=s.split(" ")
-    n=ss[0]
-    m1=float(ss[1])
-    m2=float(ss[2])
-    m3=float(ss[3])
-    m_avg=(m1+m2+m3)/3.0
-    ar[n]="%.2f" % m_avg
-s_name=input()
-print(ar[s_name])
+if __name__ == '__main__':
+    n = int(input())
+    student_marks = {}
+    for _ in range(n):
+        name, *line = input().split()
+        scores = list(map(float, line))
+        student_marks[name] = scores
+    query_name = input()
+    res = sum(student_marks[query_name])/len(student_marks[name])
+    print("{:.2f}".format(res))

BasicDataTypes/FindtheSecondLargestNumber.py

@@ -1,17 +1,12 @@
 '''
-Title     : Find the Second Largest Number
+Title     : Find the Runner-Up Score!
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
 Problem   : https://www.hackerrank.com/challenges/find-second-maximum-number-in-a-list/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-n=int(raw_input())
-num_str_ar=raw_input().strip().split()
-
-num_ar=list(map(int,num_str_ar))
-set_tmp=set(num_ar)
-final_ar=list(set_tmp)
-final_ar.sort()
-print final_ar[-2]
+if __name__ == '__main__':
+    n = int(input())
+    arr = map(int, input().split())
+    print(sorted(set(arr), reverse=True)[1])

BasicDataTypes/ListComprehensions.py

@@ -3,12 +3,13 @@
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/list-comprehensions/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-x=int(raw_input())
-y=int(raw_input())
-z=int(raw_input())
-n=int(raw_input())
-print([ [i,j,k] for i in range(x+1) for j in range(y+1) for k in range(z+1) if i+j+k != n ])
+if __name__ == '__main__':
+    x = int(input())
+    y = int(input())
+    z = int(input())
+    n = int(input())
+    ar = [[i, j, k] for i in range(x+1) for j in range(y+1) for k in range(z+1) if i+j+k!=n]
+    print(ar)

BasicDataTypes/Lists.py

@@ -3,37 +3,38 @@
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-lists/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-ar=[]
-n=int(input())
-for i in range(0,n):
-    tmp_str=input()
-    tmp_str_ar=tmp_str.strip().split(" ")
-    cmd=tmp_str_ar[0]
-    if(cmd=="print"):
-        print(ar)
-    elif(cmd=="sort"):
-        ar.sort()
-    elif(cmd=="reverse"):
-        ar.reverse()
-    elif(cmd=="pop"):
-        ar.pop()
-    elif(cmd=="count"):
-        val=int(tmp_str_ar[1])
-        ar.count(val)
-    elif(cmd=="index"):
-        val=int(tmp_str_ar[1])
-        ar.index(val)
-    elif(cmd=="remove"):
-        val=int(tmp_str_ar[1])
-        ar.remove(val)  
-    elif(cmd=="append"):
-        val=int(tmp_str_ar[1])
-        ar.append(val)          
-    elif(cmd=="insert"):
-        pos=int(tmp_str_ar[1])
-        val=int(tmp_str_ar[2])
-        ar.insert(pos,val)
+
+if __name__ == '__main__':
+    N = int(input())
+    ar = []
+    for i in range(0, N):
+        tmp_str = input()
+        tmp_str_ar = tmp_str.strip().split(" ")
+        cmd = tmp_str_ar[0]
+        if cmd == "print":
+            print(ar)
+        elif cmd == "sort":
+            ar.sort()
+        elif cmd == "reverse":
+            ar.reverse()
+        elif cmd == "pop":
+            ar.pop()
+        elif cmd == "count":
+            val = int(tmp_str_ar[1])
+            ar.count(val)
+        elif cmd == "index":
+            val = int(tmp_str_ar[1])
+            ar.index(val)
+        elif cmd == "remove":
+            val = int(tmp_str_ar[1])
+            ar.remove(val)
+        elif cmd == "append":
+            val = int(tmp_str_ar[1])
+            ar.append(val)
+        elif cmd == "insert":
+            pos = int(tmp_str_ar[1])
+            val = int(tmp_str_ar[2])
+            ar.insert(pos, val)

BasicDataTypes/NestedLists.py

@@ -3,31 +3,18 @@
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/nested-list/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-from collections import OrderedDict
-
-n=int(raw_input())
-ar={}
-val_ar=[]
-for i in range(0,n):
-    tmp_name=raw_input()
-    tmp_marks=float(raw_input())
-    ar[tmp_name]=tmp_marks
-    val_ar.append(tmp_marks)
-  
-set_val=set(val_ar)
-val_ar=list(set_val)
-val_ar.sort()
-sec_mark=val_ar[1]
-##print sec_mark    
-final_ar=[]
-for i in ar:
-    if(sec_mark==ar[i]):
-        final_ar.append(i)
-
-final_ar.sort()
-for i in final_ar:
-    print i
+if __name__ == '__main__':
+    students = []
+    scores = []
+    for _ in range(int(input())):
+        name = input()
+        score = float(input())
+        student = [name, score]
+        students.append(student)
+        scores.append(score)
+    second_min_score = sorted(set(scores))[1]
+    filtered_student_names = sorted([student[0] for student in students if student[1] == second_min_score])
+    print("\n".join(filtered_student_names))

BasicDataTypes/Tuples.py

@@ -3,14 +3,11 @@
 Subdomain : Data Types
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-tuples/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-n=int(raw_input())
-numbers=raw_input().strip().split()
-ar=[]
-for i in range(0,len(numbers)):
-   ar.append(int(numbers[i]))
-t=tuple(ar)
-print hash(t)
+if __name__ == '__main__':
+    n = int(input())
+    integer_list = map(int, input().split())
+    t = tuple(integer_list)
+    print(hash(t))

Introduction/ArithmeticOperators.py

@@ -3,12 +3,12 @@
 Subdomain : Introduction
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 15 April 2020
 Problem   : https://www.hackerrank.com/challenges/python-arithmetic-operators/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-a=int(raw_input())
-b=int(raw_input())
-print a+b
-print a-b
-print a*b
+if __name__ == '__main__':
+    a = int(input())
+    b = int(input())
+    print(a+b)
+    print(a-b)
+    print(a*b)

Introduction/Loops.py

@@ -3,10 +3,11 @@
 Subdomain : Introduction
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 13 May 2020
 Problem   : https://www.hackerrank.com/challenges/python-loops/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-a=int(raw_input())
-for i in range(0,a):
-    print i*i
+if __name__ == '__main__':
+    n = int(input())
+    for i in range(n):
+        print(i*i)
+

Introduction/PrintFunction.py

@@ -3,10 +3,21 @@
 Subdomain : Introduction
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-print/problem
 '''
-n=int(input())
-ar=range(1,n+1)
-for i in ar:
-    print(i,end="")
+
+if __name__ == '__main__':
+    n = int(input())
+    ar=range(1,n+1)
+    for i in ar:
+        print(i,end="")
+
+"""
+Alternate solution:
+
+if __name__ == '__main__':
+    n = int(input())
+    print("".join([str(i) for i in range(1,n+1)]))
+
+"""

Introduction/PythonDivision.py

@@ -3,12 +3,12 @@
 Subdomain : Introduction
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
-Created   : 15 July 2016
+Created   : 06 July 2020
 Problem   : https://www.hackerrank.com/challenges/python-division/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-a=int(raw_input())
-b=int(raw_input())
-print a/b
-c=float(a)
-print c/b
+if __name__ == '__main__':
+    a = int(input())
+    b = int(input())
+    print(a//b)
+    print(a/b)
+