### Program 294: Check if Repeated digits are there using Recursion

Program 294: Check if Repeated digits are there using Recursion

```#include<stdio.h>
void GetRpeatedDigit(int num,int frequency[]);
int CheckRpeatedDigit(int frequency[],int totalDigits,int flag);
main()
{
int num,k,temp,frequency[9],flag=0,i;
printf("Enter number to find which digits are repeated\n");
scanf("%d",&num);
temp=num;
//By default setting frequency of digits as zero
for(i=0;i<10;i++)
{
frequency[i]=0;
}
GetRpeatedDigit(num,frequency);
flag=CheckRpeatedDigit(frequency,9,0);//Only 10 digits will be there from 0-9 and we will count from 0-9
if(flag==0)
{
printf("No Repeated Digits\n");
}
else
{
printf("Repeated digits are there\n");
}
}

void GetRpeatedDigit(int num,int frequency[])
{
int k;
if(num>0)
{
k=num%10;
frequency[k]+=1;
num/=10;
GetRpeatedDigit(num,frequency);
}
else
{
return;
}

}

int CheckRpeatedDigit(int frequency[],int totalDigits,int flag)
{
if(totalDigits>=0)
{
if(frequency[totalDigits]>1)
{
flag=1;
printf("%d --> repeated %d times\n",totalDigits,frequency[totalDigits]);
}
totalDigits--;
CheckRpeatedDigit(frequency,totalDigits,flag);
}
else
{
return(flag);
}
}

```
Explanation:

//Coming Soon...

Output: