Created
January 17, 2021 09:56
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Java Pair implementation
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public class Pair<F extends Comparable<F>, S extends Comparable<S>> implements Comparable<Pair<F, S>>{ | |
private F first; | |
private S second; | |
public Pair() { | |
} | |
public Pair(F first, S second) { | |
this.first = first; | |
this.second = second; | |
} | |
public F getFirst() { | |
return first; | |
} | |
public void setFirst(F first) { | |
this.first = first; | |
} | |
public S getSecond() { | |
return second; | |
} | |
public void setSecond(S second) { | |
this.second = second; | |
} | |
@Override | |
public int compareTo(Pair<F, S> p) { | |
int result = this.first.compareTo(p.first); | |
if (result == 0) { | |
return this.second.compareTo(p.second); | |
} | |
return result; | |
} | |
@Override | |
public boolean equals(Object o) { | |
if (this == o) return true; | |
if (o == null || getClass() != o.getClass()) return false; | |
Pair<?, ?> pair = (Pair<?, ?>) o; | |
return Objects.equals(first, pair.first) && Objects.equals(second, pair.second); | |
} | |
@Override | |
public int hashCode() { | |
return Objects.hash(first, second); | |
} | |
@Override | |
public String toString() { | |
return "Pair{" + | |
"first=" + first + | |
", second=" + second + | |
'}'; | |
} | |
} |
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