Merge pull request #52 from Kushal997-das/master

added hackerrank (python) all problems.

Hackerrank_python/1.introduction/01.Say _Hello, World!_ With Python.py

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+print("Hello, World!")
+

Hackerrank_python/1.introduction/02.Python If-Else.py

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+#!/bin/python3
+
+
+import math
+import os
+import random
+import re
+import sys
+
+
+
+if __name__ == '__main__':
+    n = int(input().strip())
+#own code    
+if n%2==1:
+    print ("Weird")
+else:
+    if n>=2 and n<=5:
+            print ("Not Weird")
+    elif n>=6 and n<=20:
+        print ("Weird")
+    elif n>20:
+            print ("Not Weird")
+

Hackerrank_python/1.introduction/03.Arithmetic Operators.py

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+if __name__ == '__main__':
+    a = int(input())
+    b = int(input())
+    print (a+b)
+    print (a-b)
+    print (a*b)
+
+

Hackerrank_python/1.introduction/04.Python_ Division.py

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+if __name__ == '__main__':
+    a = int(input())
+    b = int(input())
+    print(a//b)
+    print(a/b)
+
+

Hackerrank_python/1.introduction/05.Loops.py

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+if __name__ == '__main__':
+    n = int(input())
+    for i in range(n):
+        print(i**2)
+
+

Hackerrank_python/1.introduction/06.Write a function.py

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+def is_leap(year):
+    leap = False
+
+    # Write your logic here
+
+    if year%400==0:
+        leap=True
+    elif year%100==0:
+        leap=False
+    elif year%4==0:
+        leap=True
+
+    return leap
+
+year = int(input())
+

Hackerrank_python/1.introduction/07.Print Function.py

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+if __name__ == '__main__':
+    n = int(input())
+    for i in range(1,n+1):
+        print(i,end='')
+
+

Hackerrank_python/10.Built-Ins/69.Zipped!.py

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+n,x = map(int,input().split())
+
+sheet = []
+for _ in range(x):
+    sheet.append( map(float, input().split()) ) 
+
+for i in zip(*sheet): 
+    print( sum(i)/len(i))

Hackerrank_python/10.Built-Ins/70.Input().py

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+x,k=map(int,input().split())
+fx=eval(input())
+if fx==k:
+    print("True")
+else:
+    print("False")

Hackerrank_python/10.Built-Ins/71.Python Evaluation.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+eval(input())

Hackerrank_python/10.Built-Ins/72.Athlete Sort.py

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+import math
+import os
+import random
+import re
+import sys
+
+N, M = map(int, input().split())
+
+rows = [input()for _ in range(N)]
+K = int(input())
+
+for row in sorted(rows, key=lambda row: int(row.split()[K])):
+    print(row)

Hackerrank_python/10.Built-Ins/73.Any or All.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+N=int(input())
+x=input().split()
+#N,n = int(raw_input()),raw_input().split()
+print (all([int(i)>0 for i in x]) and any([j == j[::-1] for j in x]))
+

Hackerrank_python/10.Built-Ins/74.ginortS.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+s=input()
+lower,upper,odd,even=[],[],[],[]
+for i in s:
+    if(i.islower()):
+        lower.append(ord(i))
+    elif(i.isupper()):
+        upper.append(ord(i))
+
+    elif(int(i)%2==1):
+        odd.append(ord(i))
+    else:
+        even.append(ord(i))
+lower.sort(),upper.sort(),odd.sort(),even.sort()
+marge=lower+upper+odd+even
+
+for i in marge:
+    print(chr(i),end="")

Hackerrank_python/11.Classes/75.Classes_ Dealing with Complex Numbers.py

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+import math
+class Complex(object):
+    def __init__(self, real, imaginary):
+       self.real=real
+       self.imaginary=imaginary 
+
+    def __add__(self, no):
+        real=self.real+no.real
+        imaginary=self.imaginary+no.imaginary
+        return(Complex(real,imaginary))
+
+
+    def __sub__(self, no):
+        real=self.real-no.real
+        imaginary=self.imaginary-no.imaginary
+
+        return(Complex(real,imaginary))
+
+    def __mul__(self, no):
+        real=self.real*no.real-self.imaginary*no.imaginary
+        imaginary=self.real*no.imaginary+self.imaginary*no.real
+        return(Complex(real,imaginary))
+
+
+    def __truediv__(self, no):
+        x=float(no.real**2+no.imaginary**2)
+        y=self*Complex(no.real,-no.imaginary)
+        real=y.real/x
+        imaginary=y.imaginary/x
+        return(Complex(real,imaginary))
+
+
+    def mod(self):
+        real=math.sqrt(self.real**2+self.imaginary**2)
+        return(Complex(real,0))
+
+
+    def __str__(self):
+        if self.imaginary == 0:
+            result = "%.2f+0.00i" % (self.real)
+        elif self.real == 0:
+            if self.imaginary >= 0:
+                result = "0.00+%.2fi" % (self.imaginary)
+            else:
+                result = "0.00-%.2fi" % (abs(self.imaginary))
+        elif self.imaginary > 0:
+            result = "%.2f+%.2fi" % (self.real, self.imaginary)
+        else:
+            result = "%.2f-%.2fi" % (self.real, abs(self.imaginary))
+        return result
+
+
+if __name__ == '__main__':
+    c = map(float, input().split())
+    d = map(float, input().split())
+    x = Complex(*c)
+    y = Complex(*d)
+    print(*map(str, [x+y, x-y, x*y, x/y, x.mod(), y.mod()]), sep='\n')

Hackerrank_python/11.Classes/76.Class 2 - Find the Torsional Angle.py

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+import math
+
+class Points(object):
+    def __init__(self, x, y, z):
+        self.x=x
+        self.y=y
+        self.z=z
+
+    def __sub__(self, no):
+        x=self.x-no.x
+        y=self.y-no.y
+        z=self.z-no.z
+        return Points(x,y,z)
+
+    def dot(self, no):
+        x=self.x*no.x
+        y=self.y*no.y
+        z=self.z*no.z
+        return (x+y+z)
+
+
+
+    def cross(self, no):
+        x=self.y*no.z-self.z*no.y
+        y=self.x*no.z-self.z*no.x
+        z=self.x*no.y-self.y*no.x
+        return Points(x,y,z)
+
+    def absolute(self):
+        return pow((self.x ** 2 + self.y ** 2 + self.z ** 2), 0.5)
+
+if __name__ == '__main__':
+    points = list()
+    for i in range(4):
+        a = list(map(float, input().split()))
+        points.append(a)
+
+    a, b, c, d = Points(*points[0]), Points(*points[1]), Points(*points[2]), Points(*points[3])
+    x = (b - a).cross(c - b)
+    y = (c - b).cross(d - c)
+    angle = math.acos(x.dot(y) / (x.absolute() * y.absolute()))
+
+    print("%.2f" % math.degrees(angle))
+

Hackerrank_python/12.Python Functionals/77.Map and Lambda Function.py

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+cube = lambda x: x**3# complete the lambda function 
+def fibonacci(n):
+     # return a list of fibonacci numbers
+     lis = [0,1]
+     for i in range(2,n):
+         lis.append(lis[i-2] + lis[i-1])
+     return(lis[0:n]) # complete the lambda function
+
+
+if __name__ == '__main__':
+    n = int(input())
+    print(list(map(cube, fibonacci(n))))

Hackerrank_python/12.Python Functionals/78.Validating Email Addresses With a Filter.py

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+def fun(s):
+    try:
+        username,url=s.split('@')
+        website,extension=url.split('.')
+    except ValueError:
+        return False
+    if username.replace('-','').replace('_','').isalnum() is False:
+        return False
+    elif website.isalnum() is False:
+        return False
+    elif len(extension)>3:
+        return False
+    else:
+        return True
+
+

Hackerrank_python/12.Python Functionals/79.Reduce Function.py

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+from fractions import Fraction
+from functools import reduce
+
+def product(fracs):
+    t =reduce(lambda  numerator,denominator:numerator*denominator,fracs)
+     # complete this line with a reduce statement
+    return t.numerator, t.denominator
+
+if __name__ == '__main__':
+    fracs = []
+    for _ in range(int(input())):
+        fracs.append(Fraction(*map(int, input().split())))
+    result = product(fracs)

Hackerrank_python/13.Regex and Parsing/80.Detect Floating Point Number.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+import re
+for i in range(int(input())):
+    x=input()
+    #print(bool(re.match([r'^[-+]?[0-9]*.[0-9]+$'],input())))
+    print(bool(re.match(r'^[-+]?[0-9]*[.][0-9]*$',x)))

Hackerrank_python/13.Regex and Parsing/81.Re.split().py

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+regex_pattern = r'[,.]'
+import re
+print("\n".join(re.split(regex_pattern, input())))

Hackerrank_python/13.Regex and Parsing/82.Group(), Groups() & Groupdict().py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+import re
+m = re.search(r'([a-zA-Z0-9])\1', input())
+#print(m.group(1) if m else -1)
+if m:
+    print(m.group(1))
+else:
+    print(-1)
+

Hackerrank_python/13.Regex and Parsing/83.Re.findall() & Re.finditer().py

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+# Enter your code here. Read input from STDIN. Print output to STDOUTi
+import re
+sub_string=re.findall(r'(?<=[qwrtypsdfghjklzxcvbnm])([aeiou]{2,})(?=[qwrtypsdfghjklzxcvbnm])',input(),re.I)
+'''
+if sub_string:
+    for s in sub_string:
+        print(s)
+else:
+    print(-1)
+'''
+print('\n'.join(sub_string or ['-1']))  
+#print('\n'.join(sub_string or ['-1']))  
+
+

Hackerrank_python/13.Regex and Parsing/84.Re.start() & Re.end().py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+
+'''
+S = input()
+k = input()
+import re
+pattern = re.compile(k)
+r = pattern.search(S)
+if not r: print((-1, -1))
+while r:
+    print ('({0}, {1})'.format(r.start(), r.end() - 1))
+    r = pattern.search(S,r.start() + 1)
+'''
+import re
+s = input()
+k = input()
+index = 0
+
+if re.search(k, s):
+    while index+len(k) < len(s):
+
+        m = re.search(k, s[index:]) #begins search with new index
+
+        print("({0}, {1})".format(index+m.start(), index+m.end()-1)) 
+
+
+        index += m.start() + 1
+       # c+=1
+        #print(index) #assign new index by +1 
+#elif re.search(k, s)==None:
+else:
+    print((-1,-1))  

Hackerrank_python/13.Regex and Parsing/85.Regex Substitution.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+import re
+
+for _ in range(int(input())):
+        s = input()
+        s = re.sub(r" \&\&(?= )", " and",s)
+        s = re.sub(r" \|\|(?= )", " or", s)
+        print(s)
+'''
+for _ in range(int(input())):
+    line = input()
+    
+    while ' && ' in line or ' || ' in line:
+        line = line.replace(" && ", " and ").replace(" || ", " or ")
+    
+    print(line)  
+'''   
+

Hackerrank_python/13.Regex and Parsing/86.Validating Roman Numerals.py

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+regex_pattern = r"^M{0,3}(CD|CM|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$"	# Do not delete 'r'.
+
+import re
+print(str(bool(re.match(regex_pattern, input()))))

Hackerrank_python/13.Regex and Parsing/87.Validating phone numbers.py

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+# Enter your code here. Read input from STDIN. Print output to STDOUT
+import re
+for i in range(int(input())):
+    x=input()
+
+    if re.match(r"[7,8,9]\d{9}$",x):
+        print("YES")
+    else:
+        print("NO")
+'''
+[789]\d{9}$
+
+The above statement is validating the number/count of digits is 10 or not also
+
+one digit out of [7,8,9] ==> One digit count done \d means any number of digits but here we used \d{9} which means 9 digits
+
+previously 1 digit and later on 9 digits ==> total 10 digits were counted and validated
+
+if you want to make a phone number with 11 digit validation try below and check so that doubts will get resolved
+
+[789]\d{10}$
+'''