1. To Print Butterfly Pattern using loops

Solution:

#include <stdio.h>

int main()

{

    int i,j,n;

    scanf("%d",&n);

    for(i=1;i<=n;i++)

    {

        for(j=1;j<=2*n;j++)

        {

            if(i<j)

            printf(" ");

            else

            printf("&");

            if(i<=2*n-j)

            printf(" ");

            else

            printf("&");

        }

        printf("\n");

    }

        for(i=1;i<=n;i++)

    {

        for(j=1;j<=2*n;j++)

        {

            if(i>(n-j+1))

            printf(" ");

            else

            printf("&");

            if((i+n)>j)

            printf(" ");

            else

            printf("*");

        }

        printf("\n");

    }

    return 0;

}

TCS NINJA CODING Season-2

C program to print Nth number in a series

To find Nth number in series of 

0 0 1 2 2 4 3 6 4 8 5  ........................
The above series even index contains whole numbers and odd index contains even numbers.

When given Nth index number the number at that position is to be printed.
Input:
First line of input contains Nth index number
Output:
Number at Nth index should be printed

Example:

Input:

10
Output:
5
Explanation:
In the above example
When we enter 10 index number then at that 10 index number 5 is present.
0 0 1 2 2 4 3 6 4 8 5

SOURCE CODE:
#include<stdio.h>
int main()
{
    int n,i,j,e=0,od=0,k;
    long int a[10000]={0};
    scanf("%d",&n);
 
    for(i=2;i<=n;)
    {
        if(i%2==0)
        {
            e=e+1;
            a[i]=e;
        }
        else
        {
            od=od+2;
            a[i]=od;
        }
        i++;
    }
    for(i=0;i<=n;i++)
    {
       if(i==n)
        printf("%d ",a[i]);
    }
    return 0;

}

TCS NINJA CODING PROGRAM Season-2 NQT

C Program to replace lower case letters with upper case (Vice-versa) and replacing vowels with * 

Input:

First line of input contains string 1

Second line of input contains string 2

Third line of input contains string 3

Output:

First line of output were replaced by upper case letters 

Second line of output were replaced by lower case letters

Third Line of output contains * replacing vowels.

Example:

Input:

how 

ARE 

you

Output:

HOW

are

y**

SOURCE CODE:

#include<stdio.h>

#include<string.h>

int main()

{

    char str1[10],str2[10],str3[10];

    int i,j,c=0;

    gets(str1);

    gets(str2);

    gets(str3);

    

    

    for(i=0;str1[i]!='\0';i++)

    {  

        if(str1[i]>='a'&&str1[i]<='z')

        {

            str1[i]=str1[i]-32;

        }

    }

    for(i=0;str2[i]!='\0';i++)

    {  

        if(str2[i]>='A'&&str2[i]<='Z')

        {

            str2[i]=str2[i]+32;

        }

    }

  for(i=0;str3[i]!='\0';i++)

    {  

        if(str3[i]=='a'||str3[i]=='A'||str3[i]=='e'||str3[i]=='E'||str3[i]=='i'||str3[i]=='I'||str3[i]=='o'||str3[i]=='O'||str3[i]=='u'||str3[i]=='U')

        {

            str3[i]='*';

        }

    }

   

    puts(str1);

    puts(str2);

    puts(str3);

    return 0;

}

C program to print number of times a digit has been Repeated

Input:
First line contains 'N'
Second line of input contains N number of integers.

Output:
Number of times a digit has been repeated.

Example:

Input:
6
1 1 7 7 7 9 9 9

Output:
2 3 3

Explanation:
1 is repeated for 2 times 7 is repeated for 3 times and 9 is repeated for 3 times.

SOURCE CODE:

/*To find number of times a digit is repeated*/

#include<stdio.h>

int main()

{

    int a[50],n,i,j,c=0,r=0,b[10]={0},k;

    scanf("%d",&n);

    for(i=0;i<n;i++)

    {

        scanf("%d",&a[i]);

    }

    

    for(i=0,k=0;i<n;i=j,k++)

    {

        c=0;

        for(j=i;;j++)

        {

            if(a[i]==a[j])

            {

                c++;

            }

            else

            {

                b[k]=c;

                break;

            }

        }

    }

    k=0;

    while(b[k]!=0)

    {

        printf("%d ",b[k]);

        k++;

    }

    return 0;

}