Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Random;
import javax.annotation.Nonnull;

public class Main {
    @Nonnull
    public static int[] generateCodePointSet(final int codePointSetSize, @Nonnull final Random random) {
        final int[] codePointSet = new int[codePointSetSize];
        for (int i = codePointSet.length - 1; i >= 0;) {
            final int r = Math.abs(random.nextInt());
            if (r < 0) {
                continue;
            }
            // Don't insert 0~0x20, but insert any other code point.
            // Code points are in the range 0~0x10FFFF.
            final int candidateCodePoint = 0x20 + r % (Character.MAX_CODE_POINT - 0x20);
            // Code points between MIN_ and MAX_SURROGATE are not valid on their own.
            if (candidateCodePoint >= Character.MIN_SURROGATE && candidateCodePoint <= Character.MAX_SURROGATE) {
                continue;
            }
            codePointSet[i] = candidateCodePoint;
            --i;
        }
        return codePointSet;
    }
}