Create the following student table and answer the following queries.

 

Table: Student

No	Name	Age	Dept	DateofAdm	Fee	Gender
1	Pankaj	24	Computer	10/01/99	12000	M
2	Shalini	21	History	24/03/20	20000	F
3	Sanjay	22	Hindi	12/12/21	30000	M
4	Sudha	24	History	01/07/21	25000	F
5	Rakesh	22	Computer	27/12/21	30000	M
6	Shakeel	20	Hindi	31/07/99	21000	M

a)     a)  List the names of female students who are in Hindi Department

b)   b) List the names of all the students with their date of admission in ascending order.

c)   c)  Display student’s name,fee and age for male students only.

d)   d) Count the number of students with age <23.

e)   e) Change the fee of students whose fee is <15000.

Source code and Output:

Stack Program 2 Write a menu based python program to implement the the operations insert, delete, peek and display on stack.

 Member details: 

MemberNo                     integer

MemberName                String

Age                                integer

def isEmpty(stk):

   if stk==[]:

       return True

   else:

       return False

def push(stk,item):

    stk.append(item)

    top=len(stk)-1

def pop(item):

    if isEmpty(stk):

        return "underflow"

    else:

        item=stk.pop()

        if len(stk)==0:

            top=None

        else:

            top=len(stk)-1

        return item

def peek(stk):

    if isEmpty(stk):

        return "underflow"

    else:

        top=len(stk)-1

        return stk[top]

def Display(stk):

    if isEmpty(stk):

        print("stack empty")

    else:

        top=len(stk)-1

        print(stk[top],"<-top")

        for a in range(top-1,-1,-1):

            print(stk[a])

#main

stk=[]

top=None

while True:

    print("STACK OPERATIONS")

    print("1.push")

    print("2.pop")

    print("3.peek")

    print("4.display")

    ch=int(input("enter your choice(1-4)"))

    if ch==1:

        mno=int(input("enter the member number"))

        mname=input("enter the member name")

        age=int(input("enter the age of member"))

        item=[mno,mname,age]

        push(stk,item)

    elif ch==2:

        item=pop(stk)

        if item=="underflow":

            print("underflow")

        else:

            print("popped item is",item)

    elif ch==3:

        item=peek(stk)

        if item=="underflow":

            print("underflow")

        else:

            print("topmost item is",item)

    elif ch==4 :

        Display(stk)

    else:

       print("invalid")

Output

enter the member number2

enter the member namesathish

enter the age of member35

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)1

enter the member number3

enter the member namesuresh

enter the age of member36

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)3

topmost item is [3, 'suresh', 36]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)4

[3, 'suresh', 36] <-top

[2, 'sathish', 35]

[1, 'umesh', 34]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)2

popped item is [3, 'suresh', 36]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)4

[2, 'sathish', 35] <-top

[1, 'umesh', 34]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)2

popped item is [2, 'sathish', 35]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)4

[1, 'umesh', 34] <-top

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)2

popped item is [1, 'umesh', 34]

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

enter your choice(1-4)2

underflow

STACK OPERATIONS

1.push

2.pop

3.peek

4.display

Stack based program 3 Write a Python Program to implement a Stack for the book details (bookno,bookname). That is, each item node of the stack contains two types of information- a book number and its name. Implement all the operations of Stack.

 

#source code:

def isEmpty(stk):

    if stk==[]:

        return True

    else:

        return False

def push(stk,item):

    stk.append(item)

    top=len(stk)-1

def pop(stk):

    if isEmpty(stk):

        print("underflow")

    else:

        item=stk.pop()

        if len(stk)==0:

            top=None

        else:

            top=len(stk)-1

        return item

def peek(stk):

    if isEmpty(stk):

        return "underflow"

    else:

        top=len(stk)-1

        return stk[top]

def display(stk):

    if isEmpty(stk):

        print("underflow")

    else:

        top=len(stk)-1

        print(stk[top],"<-top")

        for a in range(top-1,-1,-1):

            print(stk[a])

#main

stk=[]

top=None

while True:

    print("STACK OPERATIONS")

    print("1. Push")

    print("2. pop")

    print("3. peek")

    print("4. display")

    ch=int(input("enter choice"))

    if ch==1:

        bno=int(input("enter bookno to be inserted:"))

        bname=input("enter book name to be inserted:")

        item=[bno,bname]

        push(stk,item)

    elif ch==2:

        item=pop(stk)

        if item=="underflow":

            print("underflow")

        else:

            print("popped item is",item)

    elif ch==3:

        item=peek(stk)

        if item=="underflow":

            print("underflow")

        else:

            print("topmost item is:",item)

    elif ch==4:

        display(stk)

    else:

        print("invalid choice")

Output: