Java tutorial
/** * Copyright 2014 Zaradai * * 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.zaradai.kunzite.optimizer.data.matrix; import com.google.common.collect.Maps; import java.util.Map; public class SparseMatrix<T> { private final Map<Pair, T> values; public SparseMatrix() { values = createMap(); } protected Map<Pair, T> createMap() { return Maps.newHashMap(); } public T get(int x, int y) { return values.get(Pair.newPair(x, y)); } public void set(int x, int y, T value) { values.put(Pair.newPair(x, y), value); } }