3/4 test case passed. What am i not considering?

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
String str = sc.nextLine();
int[] freq = new int[26];
char[] c = str.toCharArray();
int n = c.length;
for(int i=0;i<n;i++)
{
if(c[i]!=’ ')
{
freq[c[i]-‘a’]++;
}
}

	StringBuilder sb = new StringBuilder();
	char cc=0;
	for(int i=0;i<n;i++)
	{
		if(i==0)
		{
			cc=c[i];
			sb.append(c[i]);
			if(freq[c[i]-'a']>1)
			{
				sb.append(freq[c[i]-'a']);
			}
		}
		else if(cc!=c[i])
		{
			cc=c[i];
			sb.append(c[i]);
			if(freq[c[i]-'a']>1)
			{
				sb.append(freq[c[i]-'a']);
			}
		}	
	}

	String a = sb.toString();
	System.out.println(a);
}

}

#2

Your code should fail for cases where a character has two ranges of occurences in the same string. For eg. for the string “aaabbaa” your code should print wrong answer.

#3

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