/guava/guava/src/com/google/common/base/CharMatcher.java
Arrays.binarySearch( chars , match1) ;
Arrays.sort ( this.chars ) ;
} } private static final class AnyOf extends CharMatcher { private final char[] chars; public AnyOf(CharSequence chars) { this.chars = chars.toString().toCharArray(); <extra_id_0> } @Override public boolean matches(char c) { return Arrays.binarySearch(chars, c) >= 0; } @Override