org.apache.pinot.tools.scan.query.Utils Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.pinot.tools.scan.query;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Utils {
private Utils() {
}
public static List> cartesianProduct(List> lists) {
int numElements = 1;
for (int i = 0; i < lists.size(); i++) {
numElements *= lists.get(i).size();
}
List> result = new ArrayList<>();
for (int i = 0; i < numElements; i++) {
int j = 1;
List