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27 lines
618 B
27 lines
618 B
package fx;
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public class Pair<K, V> {
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private K key;
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private V value;
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public Pair(K key, V value) {
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this.key = key;
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this.value = value;
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}
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public K getKey() { return key; }
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public V getValue() { return value; }
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public void setKey(K key) { this.key = key; }
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public void setValue(V value) { this.value = value; }
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// swap：交换 key 和 value 的类型和值
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public Pair<V, K> swap() {
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return new Pair<>(value, key);
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}
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@Override
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public String toString() {
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return "(" + key + ", " + value + ")";
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}
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}
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