}
private static String largeString(final int pow) {
- String str = "X";
+ StringBuilder sb = new StringBuilder("X");
for (int i = 0; i < pow; i++) {
- StringBuilder buf = new StringBuilder();
- buf.append(str).append(str);
- str = buf.toString();
+ sb.append(sb);
}
- return str;
+ return sb.toString();
}
}