Take the logical AND of selected variables in each row - Java java.lang

Java examples for java.lang:Math Logic

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Description

Take the logical AND of selected variables in each row

Demo Code

/*******************************************************************************
 * Copyright 2013 Karlsruhe Institute of Technology. This Work has been partially supported by the EIT ICT Labs funded research project Towards a Mobile Cloud (activity CLD 12206).
 * //  w ww  .  ja  va 2  s . c  om
 * 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.
 ******************************************************************************/
//package com.java2s;

public class Main {
    /**
     * Take the logical AND of selected variables in each row 
     * 
     * @param data
     * @param columns which variables to take the AND over
     * @return
     */
    public static boolean[] andRowsOverSelectedColumns(boolean[][] data,
            int[] columns) {
        boolean[] result = new boolean[data.length];

        for (int i = 0; i < data.length; i++) {
            result[i] = true;
            for (int c = 0; c < columns.length; c++) {
                result[i] &= data[i][columns[c]];
            }
        }
        return result;
    }
}

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