Knowledge in Programming

HTML - DiV Tag

<html> <meta name="viewport" content="width=device-width,initial-scale=1.0"> <head><title>Day 3</title> <style> .k     {         padding: 30px;         margin:19px;         background-color: black;         color: white;         height: 45px;         text-align: center;     } </style></head> <body> <div class="k"> Hello world </div> <span style="background-color:seagreen;color:yellow;font-family: cursive">hey</span> </body> </html>

Java If Else Condition

class Condition {   public static void main(String[] args) {     boolean learning = true;     if (learning) {       System.out.println("Java programmer");     }     else {       System.out.println("What are you doing here?");     }   } }

Java program to check if number is even or odd

import java.util.Scanner; class OddOrEven {    public static void main(String args[])    {       int x;       System.out.println("Enter an integer to check if it is odd or even");       Scanner in = new Scanner(System.in);       x = in.nextInt();             if (x % 2 == 0)          System.out.println("The number is even.");       else          System.out.println("The number is odd.");    } }

Linked List Length Using C Program

#include<stdio.h> struct node {     int data;     struct node* next; }; void getlength(struct node** head_ref) {     struct node *temp=*head_ref;     int count=0;     while(temp!=NULL)     {         temp=temp->next;         count++;     }     printf("total number of nodes are %d",count); } void push(struct node **head_ref,int x) {     struct node* new1;     new1=(struct node*)malloc(sizeof(struct node));     new1->data=x;     new1->next=*head_ref;     *head_ref=new1; } void delete1(struct node** head_ref,int key) {     struct node* temp=*head_ref;     struct node *prev;     while(temp!=NULL)     {         prev=temp;         temp=temp->next;         if(temp->data==key)         {             break;         }     }     prev->next=temp->next;     free(temp); } int main() {     struct node* head=NULL;     push(&head,89);     push(&head,65);     push(&head,23);     delete1(&head,89);     getlength(&head); }

String Operators using Shell Scripting

#!/bin/sh    str1="security"; str2="hacked"; if [ $str1 = $str2 ] then     echo "Both string are same"; else     echo "Both string are not same"; fi

Pattern Orinting Using BASH

N=5   i=0 j=0    while [ $i -le `expr $N - 1` ] do     j=0            while [ $j -le `expr $N - 1` ]     do         if [ `expr $N - 1` -le `expr $i + $j` ]         then           # Print the pattern           echo -ne "#"         else           # Print the spaces required           echo -ne " "         fi         j=`expr $j + 1`     done     # For next line     echo                     i=`expr $i + 1` done

swap two numbers using Bash

first=52 second=130     temp=$first first=$second second=$temp    echo "After swapping, numbers are:" echo "first = $first, second = $second"

Python Program To Convert Binary To Decimal

def binaryToDecimal(n):     num = n;     dec_value = 0;       # value to 1, i.e 2^0     base = 1;            temp = num;     while(temp):         last_digit = temp % 10;         temp = int(temp / 10);                    dec_value += last_digit * base;         base = base*2;     return dec_value;   num = 10101001; print(binaryToDecimal(num));

Python Program for Decimal to Binary

def decToBinary(n):              binaryNum = [0] * n;        i = 0;     while (n > 0):                     binaryNum[i] = n % 2;         n = int(n / 2);         i += 1;          for j in range(i - 1, -1, -1):         print(binaryNum[j], end = "");      n = 17; decToBinary(n);

Python Program for Inserting at the End of the Linked List

class Node: def __init__(self, dataval=None): self.dataval = dataval self.nextval = None class SLinkedList: def __init__(self): self.headval = None # Function to add newnode def AtEnd(self, newdata): NewNode = Node(newdata) if self.headval is None: self.headval = NewNode return laste = self.headval while(laste.nextval): laste = laste.nextval laste.nextval=NewNode # Print the linked list def listprint(self): printval = self.headval while printval is not None: print (printval.dataval) printval = printval.nextval list = SLinkedList() list.headval = Node("Mon") e2 = Node("Tue") e3 = Node("Wed") list.headval.nextval = e2 e2.nextval = e3 list.AtEnd("Thu") list.listprint()

Numeric Array In PHP

<html> <body> <?php /* First method to create array. */ $numbers = array( 1, 2, 3, 4, 5); foreach( $numbers as $value ) { echo "Value is $value <br />"; } /* Second method to create array. */ $numbers[0] = "one"; $numbers[1] = "two"; $numbers[2] = "three"; $numbers[3] = "four"; $numbers[4] = "five"; foreach( $numbers as $value ) { echo "Value is $value <br />"; } ?> </body> </html>

Associative Arrays in PHP

<html> <body> <?php /* First method to associate create array. */ $salaries = array("mohammad" => 2000, "qadir" => 1000, "zara" => 500); echo "Salary of mohammad is ". $salaries['mohammad'] . "<br />"; echo "Salary of qadir is ". $salaries['qadir']. "<br />"; echo "Salary of zara is ". $salaries['zara']. "<br />"; /* Second method to create array. */ $salaries['mohammad'] = "high"; $salaries['qadir'] = "medium"; $salaries['zara'] = "low"; echo "Salary of mohammad is ". $salaries['mohammad'] . "<br />"; echo "Salary of qadir is ". $salaries['qadir']. "<br />"; echo "Salary of zara is ". $salaries['zara']. "<br />"; ?> </body> </html>