public stringMutation(char[] cArray, int len) {
		this.charCount = len;
		this.charCountTail = len - 1;
		this.charArray = new char[charCount];
		this.charArrayNoTail = new char[charCount];
		
		for(int i=0; i< charCount;i++){
			this.charArray[i] = cArray[i];
			this.charArrayNoTail[i] = cArray[i];
		}
		this.charArrayNoTail[charCount - 1] = '\0';
	}