1.3

1.3

public class ispermutation
{
    public static void main(String[] args)
    {
        String s = "";
        String t = "";
        boolean result = ispermutation(s,t);
        System.out.println(result);
    }
    
    public static boolean ispermutation(String s, String t)
    {
    	if(s.length() != t.length())
    		return false;
    		
        int[] flag = new int[256];
        int value = 0;
        for(int i = 0; i < s.length(); i++)
        {
            value = s.charAt(i);
            flag[value]++;
        }
        
        for(int i = 0; i < t.length(); i++)
        {
            value = t.charAt(i);
            flag[value]--;
        }
        
        for(int i = 0; i < 256; i++)
        {
            if(flag[i] != 0)
                return false;
        }
        
        return true;
    }
}