cc_1_3.java

/**
 * 
 * @author bitcpf on June 18th
 *
 */
public class permutation {
	
	public static boolean stringpermutation(String s1, String s2){
		// Default value is 0
		int[] assic1 = new int[256];
		int[] assic2 = new int[256];
		
		if (s1.length() != s2.length()){
			return false;
		}
		// Statistic the number of characters in the arrays 
		int i=0;
		while(i<s1.length()){
			assic1[s1.charAt(i)]++;
			assic2[s2.charAt(i)]++;
			i++;
		}
		// Check if the two strings has the same number of each char
		i = 0;
		while(i<256){
			if (assic1[i]-assic2[i]!=0)
				return false;
			i++;
		}
		return true;	
		
	}
	
	public static void main(String[] args){
		String input_s1 = "abcdefg";
		String input_s2 = "bcdefga";
		
		
		System.out.println(stringpermutation(input_s1,input_s2));
	}

}