Aug 21, 2022
diff --git a/data_structures/2_Arrays/Solution/1_expenses.py b/data_structures/2_Arrays/Solution/1_expenses.py
 # 1. Let us say your expense for every month are listed below,
 # 1. January -  2200
 #  2. February - 2350
 #     3. March - 2600
 #     4. April - 2130
 #     5. May - 2190
 #
 # Create a list to store these monthly expenses and using that find out,
 #
 # 1. In Feb, how many dollars you spent extra compare to January?
 # 2. Find out your total expense in first quarter (first three months) of the year.
 # 3. Find out if you spent exactly 2000 dollars in any month
 # 4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list
 # 5. You returned an item that you bought in a month of April and
 # got a refund of 200$. Make a correction to your monthly expense list
 # based on this

 exp = [2200,2350,2600,2130,2190]

 # 1. In Feb, how many dollars you spent extra compare to January?
 print("In feb this much extra was spent compared to jan:",exp[1]-exp[0]) # 150

 # 2. Find out your total expense in first quarter (first three months) of the year
 print("Expense for first quarter:",exp[0]+exp[1]+exp[2]) # 7150

 # 3. Find out if you spent exactly 2000 dollars in any month
 print("Did I spent 2000$ in any month? ", 2000 in exp) # False

 # 4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list
 exp.append(1980)
 print("Expenses at the end of June:",exp) # [2200, 2350, 2600, 2130, 2190, 1980]

 # 5. You returned an item that you bought in a month of April and
 # got a refund of 200$. Make a correction to your monthly expense list
 # based on this
 #   3. March - 2600
 #   4. April - 2130
 #   5. May - 2190

 def array_ex(arr, key, key1):
    # first question
    compare = int(arr[1][key]) - int(arr[0][key])
    print("1. In Feb, how many dollars you spent extra compare to January? : ", compare)

    # second question
    first_quarter = int(arr[0][key]) + int(arr[1][key]) + int(arr[2][key])
    print("2. Find out your total expense in first quarter (first three months) of the year. : ", first_quarter)

    # third question
    value = 0
    for i in range(len(arr)):
        if arr[i][key] == "2130":
            value += 1
        i += 1
    if value == 1:
        print("3. Find out if you spent exactly 2130 dollars in any month : ", value, "time")
    elif value > 1:
        print("3. Find out if you spent exactly 2130 dollars in any month : ", value, "times")
    else:
        print("3. Find out if you spent exactly 2130 dollars in any month : Zero")

    # fifth question
    refund = 0
    for i in range(len(arr)):
        if arr[i][key1] == "April":
            refund = int(arr[i][key]) - 200
        i += 1
    print("5. You returned an item that you bought in a month of April and got a refund of 200$. Make a correction to your monthly expense list based on this : ", refund)

    # fourth question
    item_expense = [{'Month': 'June', 'E_Amount': '1980'}]
    arr.append(item_expense)
    print("4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list : ",
          arr)


 if __name__ == '__main__':
    expense = [
        {'Month': 'January', 'E_Amount': '2200'},
        {'Month': 'February', 'E_Amount': '2350'},
        {'Month': 'March', 'E_Amount': '2600'},
        {'Month': 'April', 'E_Amount': '2130'},
        {'Month': 'May', 'E_Amount': '2190'}
    ]

    array_ex(expense, key="E_Amount", key1="Month")

 exp[3] = exp[3] - 200
 print("Expenses after 200$ return in April:",exp) # [2200, 2350, 2600, 1930, 2190, 1980]
Original file line number	Diff line number	Diff line change
		@@ -1,37 +1,57 @@
		# 1. Let us say your expense for every month are listed below,
		# 1. January - 2200
		# 2. February - 2350
		# 3. March - 2600
		# 4. April - 2130
		# 5. May - 2190
		#
		# Create a list to store these monthly expenses and using that find out,
		#
		# 1. In Feb, how many dollars you spent extra compare to January?
		# 2. Find out your total expense in first quarter (first three months) of the year.
		# 3. Find out if you spent exactly 2000 dollars in any month
		# 4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list
		# 5. You returned an item that you bought in a month of April and
		# got a refund of 200$. Make a correction to your monthly expense list
		# based on this

		exp = [2200,2350,2600,2130,2190]

		# 1. In Feb, how many dollars you spent extra compare to January?
		print("In feb this much extra was spent compared to jan:",exp[1]-exp[0]) # 150

		# 2. Find out your total expense in first quarter (first three months) of the year
		print("Expense for first quarter:",exp[0]+exp[1]+exp[2]) # 7150

		# 3. Find out if you spent exactly 2000 dollars in any month
		print("Did I spent 2000$ in any month? ", 2000 in exp) # False

		# 4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list
		exp.append(1980)
		print("Expenses at the end of June:",exp) # [2200, 2350, 2600, 2130, 2190, 1980]

		# 5. You returned an item that you bought in a month of April and
		# got a refund of 200$. Make a correction to your monthly expense list
		# based on this
		# 3. March - 2600
		# 4. April - 2130
		# 5. May - 2190

		def array_ex(arr, key, key1):
		# first question
		compare = int(arr[1][key]) - int(arr[0][key])
		print("1. In Feb, how many dollars you spent extra compare to January? : ", compare)

		# second question
		first_quarter = int(arr[0][key]) + int(arr[1][key]) + int(arr[2][key])
		print("2. Find out your total expense in first quarter (first three months) of the year. : ", first_quarter)

		# third question
		value = 0
		for i in range(len(arr)):
		if arr[i][key] == "2130":
		value += 1
		i += 1
		if value == 1:
		print("3. Find out if you spent exactly 2130 dollars in any month : ", value, "time")
		elif value > 1:
		print("3. Find out if you spent exactly 2130 dollars in any month : ", value, "times")
		else:
		print("3. Find out if you spent exactly 2130 dollars in any month : Zero")

		# fifth question
		refund = 0
		for i in range(len(arr)):
		if arr[i][key1] == "April":
		refund = int(arr[i][key]) - 200
		i += 1
		print("5. You returned an item that you bought in a month of April and got a refund of 200$. Make a correction to your monthly expense list based on this : ", refund)

		# fourth question
		item_expense = [{'Month': 'June', 'E_Amount': '1980'}]
		arr.append(item_expense)
		print("4. June month just finished and your expense is 1980 dollar. Add this item to our monthly expense list : ",
		arr)


		if __name__ == '__main__':
		expense = [
		{'Month': 'January', 'E_Amount': '2200'},
		{'Month': 'February', 'E_Amount': '2350'},
		{'Month': 'March', 'E_Amount': '2600'},
		{'Month': 'April', 'E_Amount': '2130'},
		{'Month': 'May', 'E_Amount': '2190'}
		]

		array_ex(expense, key="E_Amount", key1="Month")

		exp[3] = exp[3] - 200
		print("Expenses after 200$ return in April:",exp) # [2200, 2350, 2600, 1930, 2190, 1980]