Python average function

import math
import os
import random
import re
import sys



def avg(*nums):
    return sum(nums)/len(nums)

if __name__ == '__main__':

Python Reverse Word and Swap Cases

#!/bin/python

import math
import os
import random
import re
import sys



#
# Complete the 'reverse_words_order_and_swap_cases' function below.
#
# The function is expected to return a STRING.
# The function accepts STRING sentence as parameter.
#

def reverse_words_order_and_swap_cases(sentence):
    word_list = sentence.split()
    reversed_list = word_list[:: -1]
    reversed_sentence = " ".join(reversed_list)
    return reversed_sentence.swapcase()


if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    sentence = raw_input()

    result = reverse_words_order_and_swap_cases(sentence)

    fptr.write(result + '\n')

    fptr.close()

Python Shape Classes with Area Method

#!/bin/python3

import math
import os
import random
import re
import sys



class Rectangle:
    def __init__(self,breadth,length):
        self.breadth=breadth
        self.length=length
    def area(self):
        return self.breadth*self.length

    pass

class Circle:
    def __init__(self,radius):
        self.radius=radius
    def area(self):
        return math.pi*(self.radius**2)
    pass
if __name__ == '__main__':  

Problem Solving

Gaming laptop battery life

def getBattery(events):
    c=50
    for i in events:
        if (i<0):
            c+=i
        else:
            c+=i
            if c>100:
                c=100
        print(c)
    return c

String Anagram

from collections import Counter
def stringAnagram(dictionary, query):
    # Write your code here
    dict = ["".join(sorted(word)) for word in dictionary]
    q = ["".join(sorted(word)) for word in query]
    result = []
    count = Counter(dict)
    for word in q:
        if word in count.keys():
            result.append(count[word])
        else:
            result.append(0)

    return result

Java

The Adder Class

class Adder extends Calculator{
int add(int a,int b)
{
return a+b;
}
}

Sql

Student Advisor

select std.roll_number, std.name 
from student_information std, faculty_information fi 
where std.advisor = fi.employee_id and (fi.gender = 'M' and fi.salary > 15000 or fi.gender = 'F' and fi.salary > 20000) 

Sql Intermediate

Products without sales

select sku,product_name from PRODUCT P left join INVOICE_ITEM Ii on Ii.product_id = P.id where invoice_id is NULL order by SKU;

Customer Spending

select b.customer_name,cast(a.total_price as decimal(10,6))amount from customer b, invoice a where a.customer_id=b.id and a.total_price<=(select (0.25*avg(a.total_price)) FROM invoice a) order by amount desc ;

***or***

select customer_name,to_char(total_price,'fm9999999.900000') from customer c, Invoice i where c.id = i.customer_id and total_price < (select (0.25)*sum(total_price)/count(id) from Invoice);