Minimum Frequency

• Problem Description

  
  How to find lowest frequency character in a string using loop in C programming.

• Test Case 1

  
  Input (stdin)

  madam
  
  

  Expected Output

  d=1

• Test Case 2

  
  Input (stdin)

  eefffggghhh
  
  

  Expected Output

  e=2

• Program

• #include <stdio.h>
  #include<string.h>
  int main()
  {
    char str[100];
    int freq[225];
    int i=0,min;
    int ascii;
    scanf("%s",str);
    for(i=0;i<225;i++)
    {
      freq[i]=0;
    }
    i=0;
    while(str[i]!='\0')
    {
      ascii=(int)str[i];
      freq[ascii]+=1;
      i++;
    }
    min=0;
    for(i=0;i<225;i++)
    {
      if(freq[i]!=0)
      {
        if(freq[min]==0||freq[i]<freq[min])
          min=i;
      }
    }
    printf("%c=%d",min,freq[min]);
    
  
   return 0;
  }