net.tradelib.functors.Min.java Source code

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Here is the source code for net.tradelib.functors.Min.java

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// Copyright 2015 Ivan Popivanov
//
// 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 net.tradelib.functors;

import com.google.common.collect.EvictingQueue;

public class Min {
    private int length;
    private int count;
    private EvictingQueue<Double> eq;

    public Min(int length) {
        this.length = length;
        this.count = 0;
        this.eq = EvictingQueue.create(this.length);
    }

    public int getLength() {
        return length;
    }

    public int getCount() {
        return count;
    }

    public void add(double value) {
        ++count;
        eq.add(value);
    }

    public double last() {
        return count < length ? Double.NaN : eq.stream().min(Double::compare).get();
    }
}