Java Array Remove removeRows(int[][] array, Collection rowsIndices)

Description

remove Rows

License

Open Source License

Parameter

Parameter	Description
array	The array
rowsIndices	The rows to be removed

Return

A copy of the given array with the specified rows removed

Declaration

public static int[][] removeRows(int[][] array, Collection<Integer> rowsIndices) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

public class Main {
    /**//from w ww .ja  v  a 2 s  .c o  m
     * @brief Returns a copy of a given array with the specified rows removed
     *
     * @param array
     *     The array
     * @param rowsIndices
     *     The rows to be removed
     *
     * @return A copy of the given array with the specified rows removed
     */
    public static int[][] removeRows(int[][] array, Collection<Integer> rowsIndices) {
        int newLength = array.length - rowsIndices.size();
        int[][] newArray = new int[newLength][];

        ArrayList<Integer> listOfRows = new ArrayList<Integer>(rowsIndices);
        Collections.sort(listOfRows);

        int currentRowInNewArray = 0;
        int currentIndexInArray = 0;
        for (int i = 0; i < array.length; i++) {
            if (currentIndexInArray < listOfRows.size() && i == listOfRows.get(currentIndexInArray)) {
                currentIndexInArray++;
                continue;
            }

            newArray[currentRowInNewArray] = array[i];
            currentRowInNewArray++;
        }

        return newArray;
    }
}

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