Day_10.md

# Question 31
### **Question:**
> **_Define a function which can print a dictionary where the keys are numbers between 1 and 20 (both included) and the values are square of keys._**
---
### Hints:
```
Use dict[key]=value pattern to put entry into a dictionary.Use ** operator to get power of a number.Use range() for loops.
```
---
**Main Author's Solution: Python 2**
```python
def printDict():
d=dict()
for i in range(1,21):
d[i]=i**2
print d
printDict()
```
---
**My Solution: Python 3**
```python
def printDict():
dict={i:i**2 for i in range(1,21)} # Using comprehension method and
print(dict)
printDict()
```
---
# Question 32
### **Question:**
> **_Define a function which can generate a dictionary where the keys are numbers between 1 and 20 (both included) and the values are square of keys. The function should just print the keys only._**
---
### Hints:
```
Use dict[key]=value pattern to put entry into a dictionary.Use ** operator to get power of a number.Use range() for loops.Use keys() to iterate keys in the dictionary. Also we can use item() to get key/value pairs.
```
---
**Main Author's Solution: Python 2**
```python
def printDict():
d=dict()
for i in range(1,21):
d[i]=i**2
for k in d.keys():
print k
printDict()
```
---
**My Solution: Python 3**
```python
def printDict():
dict = {i: i**2 for i in range(1, 21)}
print(dict.keys()) # print keys of a dictionary
printDict()
```
---
# Question 33
### **Question:**
> **_Define a function which can generate and print a list where the values are square of numbers between 1 and 20 (both included)._**
---
### Hints:
```
Use ** operator to get power of a number.Use range() for loops.Use list.append() to add values into a list.
```
---
**Main Author's Solution: Python 2**
```python
def printList():
li=list()
for i in range(1,21):
li.append(i**2)
print li
printList()
```
---
**My Solution: Python 3**
```python
def printList():
lst = [i ** 2 for i in range(1, 21)]
print(lst)
printList()
```
---
# Question 34
### **Question:**
> **_Define a function which can generate a list where the values are square of numbers between 1 and 20 (both included). Then the function needs to print the first 5 elements in the list._**
---
### Hints:
```
Use ** operator to get power of a number.Use range() for loops.Use list.append() to add values into a list.Use [n1:n2] to slice a list
```
---
**Main Author's Solution: Python 2**
```python
def printList():
li=list()
for i in range(1,21):
li.append(i**2)
print li[:5]
printList()
```
---
**My Solution: Python 3**
```python
def printList():
lst = [i ** 2 for i in range(1, 21)]
for i in range(5):
print(lst[i])
printList()
```
---
```python
'''Solution by: popomaticbubble
'''
def squares(n):
squares_list = [i**2 for i in range(1,n+1)]
print(squares_list[0:5])
squares(20)
```
---
```python
'''Solution by: yuan1z'''
func = lambda :print([i**2 for i in range(1,21)][:5])
```
---
# Question 35
### **Question:**
> **_Define a function which can generate a list where the values are square of numbers between 1 and 20 (both included). Then the function needs to print the last 5 elements in the list._**
---
### Hints:
```
Use ** operator to get power of a number.Use range() for loops.Use list.append() to add values into a list.Use [n1:n2] to slice a list
```
---
**Main Author's Solution: Python 2**
```python
def printList():
li=list()
for i in range(1,21):
li.append(i**2)
print li[-5:]
printList()
```
---
**My Solution: Python 3**
```python
def printList():
lst = [i ** 2 for i in range(1, 21)]
for i in range(19,14,-1):
print(lst[i])
printList()
```
---
```python
'''Solution by: popomaticbubble
'''
def squares(n):
squares_list = [i**2 for i in range(1,n+1)]
print(squares_list[-5:])
squares(20)
```
---
# Question 36
### **Question:**
> **_Define a function which can generate a list where the values are square of numbers between 1 and 20 (both included). Then the function needs to print all values except the first 5 elements in the list._**
---
```
Hints: Use ** operator to get power of a number.Use range() for loops.Use list.append() to add values into a list.Use [n1:n2] to slice a list
```
---
**Main Author's Solution: Python 2**
```python
def printList():
li=list()
for i in range(1,21):
li.append(i**2)
print li[5:]
printList()
```
---
**My Solution: Python 3**
```python
def printList():
lst = [i ** 2 for i in range(1, 21)]
for i in range(5,20):
print(lst[i])
printList()
```
---
# Question 37
### **Question:**
> **_Define a function which can generate and print a tuple where the value are square of numbers between 1 and 20 (both included)._**
---
### Hints:
```
Use ** operator to get power of a number.Use range() for loops.Use list.append() to add values into a list.Use tuple() to get a tuple from a list.
```
---
**Main Author's Solution: Python 2**
```python
def printTuple():
li=list()
for i in range(1,21):
li.append(i**2)
print tuple(li)
printTuple()
```
---
**My Solution: Python 3**
```python
def printTupple():
lst = [i ** 2 for i in range(1, 21)]
print(tuple(lst))
printTupple()
```
---
```python
'''
Solution by: Seawolf159
'''
def square_of_numbers():
return tuple(i ** 2 for i in range(1, 21))
print(square_of_numbers())
```
---
### Comment
**_Problems of this section is very much easy and all of those are of a modification of same type problem which mainly focused on using some commonly used function works with list,dictionary, tupple.In my entire solutions, I havn't tried to solve problems in efficient way.Rather I tried to solve in a different way that I can.This will help a beginner to know how simplest problems can be solved in different ways._**
[**_go to previous day_**](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day%209.md "Day 9")
[**_go to next day_**](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 11")
[**_Discussion_**](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/issues/3)