Jul 18, 2025
diff --git a/data_structures/2_Arrays/2_arrays_exercise.md b/data_structures/2_Arrays/2_arrays_exercise.md
    5. May - 2190

 Create a list to store these monthly expenses and using that find out,
 #solution
 expenses=[2200,2350,2600,2130,2190]
 print("in feb,how many dollars spent extra compared to jan",expenses[1]-expenses[0])
 print("total expenses in first quarter of year",expenses[0]+expenses[1]+expenses[2])
 print("did i spend exactly 2000 in any month?")
 for i in expenses:
    if i==2000:
    return true
     break
    else:
    return false
 expenses.append(1980)
 expenses[3]=expenses[3]-200
 print("got refund in april",expenses[3])






    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.
 ```
 heros=['spider man','thor','hulk','iron man','captain america']
 ```
 print(len(heros))
 heros.append('black panther')
 heros.pop(6)
 heros.insert(3,'black panther')
 heros[1:3]='doctor strange'
 heros.sort()

 Using this find out,

 3. Create a list of all odd numbers between 1 and a max number.
 Max number is something you need to take from a user using input() function

 int max_num=print("enter your max odd num ",int(input())
 oddnos=[]
 for i in range(1,max_num)
 if(i%2==0)
 oddnos.append(i)





 [Solution](https://github.com/codebasics/data-structures-algorithms-python/blob/master/data_structures/2_Arrays/Solution/3_odd_even_numbers.py)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -8,6 +8,25 @@
		5. May - 2190

		Create a list to store these monthly expenses and using that find out,
		#solution
		expenses=[2200,2350,2600,2130,2190]
		print("in feb,how many dollars spent extra compared to jan",expenses[1]-expenses[0])
		print("total expenses in first quarter of year",expenses[0]+expenses[1]+expenses[2])
		print("did i spend exactly 2000 in any month?")
		for i in expenses:
		if i==2000:
		return true
		break
		else:
		return false
		expenses.append(1980)
		expenses[3]=expenses[3]-200
		print("got refund in april",expenses[3])






		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.
Expand All		@@ -23,6 +42,12 @@ Create a list to store these monthly expenses and using that find out,
		```
		heros=['spider man','thor','hulk','iron man','captain america']
		```
		print(len(heros))
		heros.append('black panther')
		heros.pop(6)
		heros.insert(3,'black panther')
		heros[1:3]='doctor strange'
		heros.sort()

		Using this find out,

Expand All		@@ -41,5 +66,15 @@ Using this find out,
		3. Create a list of all odd numbers between 1 and a max number.
		Max number is something you need to take from a user using input() function

		int max_num=print("enter your max odd num ",int(input())
		oddnos=[]
		for i in range(1,max_num)
		if(i%2==0)
		oddnos.append(i)





		[Solution](https://github.com/codebasics/data-structures-algorithms-python/blob/master/data_structures/2_Arrays/Solution/3_odd_even_numbers.py)