Coders PlayGround

Check the following code:

def simple(num1, num2):

  pass

def simple(num1,num2=5):

  print("Number 1 and Number 2 default")

  print(num1,num2)

def class_a(name, roll_no, branch = "IT", strength_of_class = 90):

  print (name, '\n', roll_no,'\n',branch,'\n',strength_of_class)

simple(10)

simple(10,20)

class_a('Kevin',38)

Functions with parameter

def simple_addition(num1, num2):

  answer = num1 + num2

  print ("Num1 is:", num1)

  print ("Num2 is:",num2)

  print ("Addition:", answer)

simple_addition(5,10)

simple_addition(num1 = 10, num2 = 5)

simple_addition(num2 = 5, num1 = 10)

'''

same no of parameters should be passed

'''

 

Output

 

 

 

 

 

 

 

Functions in Python

def example():

  print ('Yay! This is my function!')

for x in range(1,6):

  example()

Concatenation in Python3 can be done using two different ways, 

 a) Using a '+' operator

 b) Using a ',' operator

Sample Program:
 

# This doesn't add space unless we add 

print ("Hello" + "there!")

# This adds space

print ("Hello","there!")

# string and integer

print ("Hi" + "5")

#if only 5 is written then error will be displayed

# we can also write

print ("hi",str(5))

'''

If you don’t want characters prefaced by \ to

be interpreted as special characters, you can use

raw strings by adding an r before the first quote

'''

# check out this will treat (\n)ew as newline

# To avoid that check the second condition

print ('\Desktop\python3\new')

print (r'\Desktop\python3\new')

print ("""

Name Div 

ABC A

Xyz B

""")

 

Output

print ("Using range function...")

# xrange in Python 2.7

# range built in function

for x in range(1,11):

  print (x)

# prints from 1 --> 10

x = 5

y = 8

z = 5

if x < y:

  print ('x is less than y ')

if z < y > x:

  print ('y is greater than x and greater to z')

if z == y:

  print ('z is equal to y')

x = 5

y = 8

if x > y:

  print ('x is greater than y')

else:

  print ('y is greater than x')

Output

x = 5

y = 10

z = 20

if x > y:

  print ('x is greater than y')

elif x < z:

  print ('x is less than z')

elif 5>2:

  print ('5 is greater than 2')

else:

  print ('if and elif(s) never ran')

 

 

The if elif else is a code together, anyone one of it returns true then we come out of the loop.

As in this case, we see than 5>2 is true but since the statement above it is true, it came out of the loop.

list1 = [1,5,4,6,9,8,7,1,5,2,0,1,3]

for eachno in list1:

  print (eachno)

# highlight and tab to indent

# indentation is important in Python

print ("Using range function...")

# xrange in Python 2.7

# range built in function

for x in range(1,11):

  print (x)

# prints from 1 --> 10

condition = 1

while condition < 10:

  print(condition)

  condition += 1

# Infinte loop

# Ctrl C to break the loop

while True:

  print ("Processing...")

import math

a = 2

b = 5

print(a+b)

print(a-b)

print(a/b)

print(a*b)

print(a**b)

print("Value of pi: ", math.pi)

print("Ceil function",math.ceil(5.4))

print("Floor function",math.floor(5.4))

print("Absolute function",math.fabs(-5))

print("Factorial function",math.factorial(5))

print("Greates common divisor function",math.gcd(21,45))

print("Radian to degree function",math.degrees(30))

print("Degree to radian function",math.radians(30))

print("Complex no: ", "\n", "(3+5j) + (5 + 2j) = ",(3+5j) + (5 + 2j))

Python is easy to learn and is a high level language. Python offers much more structure and support for large programs than shell scrips or batch files.

Python allows you to split your program into modules that can be reused in other Python programs. It comes with a large collection of standard modules that you can use as the basis of your programs — or as examples to start learning to program in Python. Some of these modules provide things like file I/O, system calls, sockets, and even interfaces to graphical user interface toolkits like Tk.

Python is an interpreted language, which can save you considerable time during program development because no compilation and linking is necessary. The interpreter can be used interactively, which makes it easy to experiment with features of the language, to write throw-away programs, or to test functions during bottom-up program development. It is also a handy desk calculator.

Python enables programs to be written compactly and readably. Programs written in Python are typically much shorter than equivalent C, C++, or Java programs, for several reasons:

Python is extensible: if you know how to program in C it is easy to add a new built-in function or module to the interpreter, either to perform critical operations at maximum speed, or to link Python programs to libraries that may only be available in binary form (such as a vendor-specific graphics library). Once you are really hooked, you can link the Python interpreter into an application written in C and use it as an extension or command language for that application.

By the way, the language is named after the BBC show “Monty Python’s Flying Circus” and has nothing to do with reptiles. Making references to Monty Python skits in documentation is not only allowed, it is encouraged!

References: https://docs.python.org/3/tutorial/appetite.html

print ("Welcome to TechandCoders site")

# we can also use single quotes

print ('Let us learn python programming')

# '\' escape character

print ("She's here!")

print('She\'s here!!!')

Now, suppose you want to print the value of a variable. How would you do it?

x = 5

# Simply write the name of the variable without any single or double quotes.

print (x)

Run this code and check


Please comment and share!
Any queries, mail me at: techandcoders@gmail.com

Thank you!

The if construct:

if(condition)
{
    // The desired operation
}

---

The if-else construct:

if(condition)
{
    // The desired operation
}else{
  // The desired operation
}

---

if - else if - else

if(condition1)
{
    // The desired operation
}else if(condition2)
{
    // The desired operation
}else
{
    // The desired operation
}

public class Grade
{
 public static void main(String args[])
 {
  int phy,chem,math;
  double a;
  phy=69;
  chem=81;
  math=80;
  a=(phy+chem+math)/3;
  System.out.println("Percentage: "+a);
  if(a>=75)
  {
   System.out.println("Grade:A");
  }
  else if(a>=50)
  {
   System.out.println("Grade:B");
  }
  else if(a>=35)
  {
   System.out.println("Grade:C");
  }
  else
  {
   System.out.println("Fail");
  }
 }
}
OUTPUT
Percentage: 76.0
Grade:A

Hello everyone,

The factorial is denoted by "!"

So when we say, find 3 factorial, it is mathematically written as 3!

Now let us look into the formula as to how to find the factorial of any number.
Factorial of a number n is given by n! = n(n-1)(n-2)!

Suppose, factorial of 5 is 5 x 4 x 3 x 2 x 1 = 120.

• The factorial of 1! = 1
• The factorial of 0! = 1

import java.util.Scanner;
public class Factorial
{
 public static void main(String args[])
 {
  int i, fact=1;
  System.out.println("Enter the Number:");
  Scanner in= new Scanner(System.in);
  int a=in.nextInt();
  for(i=1;i<=a;i++)
  {
   fact=fact*i;
  }
  System.out.println(factorial +"!="+fact);
 }
}
OUTPUT
Enter the Number:
5
Factorial != 120

Hello Friends,
This is a program to print a simple message:

Remember: The file name should be same as the class Name.

In this case, the file name will be First.java

#include<stdio.h>
#include<stdlib.h>
struct stack
{
 int data;
 struct stack *next;
};
struct stack *top = NULL;
struct stack *getNode()
{
 return (struct stack*)malloc(sizeof(struct stack));
}
void push()
{
 int val;
 struct stack *newnode;
 printf("\n Enter data :");
 scanf("%d",&val);
 newnode = getNode();
 newnode->data = val;
 if(top == NULL)
 {
  top = newnode;
  newnode->next = NULL;
 }
 else
 {
  newnode->next = top;
  top = newnode;
 }
}
void pop()
{
 int x;
 struct stack *del,*temp;
 temp = top;
 if(temp== NULL)
  printf("\n stack underflow");
 else
 {
  x=temp->data;
  top = temp->next;
  free(temp);
  printf("\n Deleted element is %d",x);
 }
}
void peek()
{
 if(top == NULL)
  printf("\n Stack Underflow");
 else
 {
  printf("Peek value : %d \n ",top->data);
 }
}
void disp()
{
 struct stack *temp=top;
 if(top == NULL)
  printf("\n Stack underflow \n");
 else
 {
  printf("\n Stack elements are : ");
  while(temp!=NULL)
  {
   printf("%d \t",temp->data);
   temp = temp->next;
  }
 }
}
void quit()
{
 printf("\n Thank you!!! \n\n");
}
void main()
{
 int ch;
 do{
  printf("\n == MENU ==");
  printf("\n 1. PUSH ");
  printf("\n 2. POP ");
  printf("\n 3. PEEK ");
  printf("\n 4. DISPLAY ");
  printf("\n 5. QUIT");
  printf("\n Enter your choice :");
  scanf("%d",&ch);
  switch(ch)
  {
   case 1 : push();
      break;
   case 2 : pop();
      break;
   case 3 : peek();
      break;
   case 4 : disp();
      break;
   case 5 : quit();
      break;
   default : printf("\n Invalid input");
  }
 }while(ch!=5);
}
/*
OUTPUT : 



 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :1

 Enter data :50

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :1

 Enter data :20

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :1

 Enter data :30

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :1

 Enter data :40

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :1

 Enter data :10

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :4

 Stack elements are : 10  40  30  20  50  
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :3
Peek value : 10 
 
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :2

 Deleted element is 10
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :4

 Stack elements are : 40  30  20  50  
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :2

 Deleted element is 40
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :2

 Deleted element is 30
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :4

 Stack elements are : 20  50  
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :2

 Deleted element is 20
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :3
Peek value : 50 
 
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :4

 Stack elements are : 50  
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :3
Peek value : 50 
 
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :2

 Deleted element is 50
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :3

 Stack Underflow
 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :4

 Stack underflow 

 == MENU ==
 1. PUSH 
 2. POP 
 3. PEEK 
 4. DISPLAY 
 5. QUIT
 Enter your choice :5

 Thank you!!! 

*/