45 lines
992 B
Java
45 lines
992 B
Java
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import java.util.*;
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public class PairLong implements Comparable<PairLong> {
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final long u;
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final long v;
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public PairLong(long u, long v) {
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this.u = u;
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this.v = v;
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}
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public int hashCode() {
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int hu = (int) (u ^ (u >>> 32));
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int hv = (int) (v ^ (v >>> 32));
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return 31 * hu + hv;
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}
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public boolean equals(Object o) {
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PairLong other = (PairLong) o;
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return u == other.u && v == other.v;
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}
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public int compareTo(PairLong other) {
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return Long.compare(u, other.u) != 0 ? Long.compare(u, other.u) : Long.compare(v, other.v);
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}
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public String toString() {
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return "[u=" + u + ", v=" + v + "]";
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}
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// Usage example
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public static void main(String[] args) {
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Set<PairLong> set1 = new TreeSet<>();
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Set<PairLong> set2 = new HashSet<>();
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for (int i = 0; i < 20; i++) {
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PairLong p = new PairLong(i % 5, i % 10);
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set1.add(p);
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set2.add(p);
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}
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System.out.println(true == (set1.size() == set2.size()));
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System.out.println(set1);
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System.out.println(set2);
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}
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}
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