MINIMUM FREQUENCY

• Problem Description

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

• CODING ARENA

• #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;

  }

• Test Case 1

  
  Input (stdin)

  madam
  
  

  Expected Output

  d=1

• Test Case 2

  
  Input (stdin)

  eefffggghhh
  
  

  Expected Output

  e=2