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Java Program to find maximum and minimum occurring character in a string.

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Java Program to find maximum and minimum occurring character in a string.

In this example, we will create a java program to count each character present in the string and find out the maximum and minimum occurring character in the given string.

Program:


public class Main  
   {
   public static void main(String[] args) 
   {    
      String str = "grass is greener on the other side";    
      int[] freq = new int[str.length()];    
      char minChar = str.charAt(0), maxChar = str.charAt(0);    
      int i, j, min, max;            
          
      char string[] = str.toCharArray();    
          
      for(i = 0; i < string.length; i++) 
	  {    
          freq[i] = 1;    
          for(j = i+1; j < string.length; j++) 
		  {    
              if(string[i] == string[j] && string[i] != ' ' && string[i] != '0') 
			  {    
                  freq[i]++;    
                      
                  string[j] = '0';    
              }    
          }    
      }    
          
      min = max = freq[0];    
      for(i = 0; i <freq.length; i++) 
	  {    
              
          if(min > freq[i] && freq[i] != '0') 
		  {    
              min = freq[i];    
              minChar = string[i];    
          }    
          if(max < freq[i]) 
		  {    
              max = freq[i];    
              maxChar = string[i];    
          }    
      }    
          
      System.out.println("Minimum occurring character: " + minChar);    
      System.out.println("Maximum occurring character: " + maxChar);    
  }  
}

Output
Minimum occurring character: a
Maximum occurring character: e

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