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1 files changed, 83 insertions, 0 deletions

diff --git a/labs/lab01_pair/Pair.java b/labs/lab01_pair/Pair.java
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+
+public class Pair<T1,T2> implements PairInterface<T1,T2>
+{
+	// TO DO: Instance Variables
+	T1 one;
+	T2 two;
+	
+	public Pair(T1 aFirst, T2 aSecond)
+	{
+		one = aFirst;
+		two = aSecond;
+	}
+	
+	/**
+	 * Gets the first element of this pair.
+	 * @return the first element of this pair.
+	 */
+	public T1 fst()
+	{
+		return one;
+	}
+	
+	/**
+	 * Gets the second element of this pair.
+	 * @return the second element of this pair.
+	 */
+	public T2 snd()
+	{
+		return two;
+	}
+	
+	/**
+	 * Sets the first element to aFirst.
+	 * @param aFirst  the new first element
+	 */
+	public void setFst(T1 aFirst)
+	{
+		one = aFirst;
+	}
+	
+	/**
+	 * Sets the second element to aSecond.
+	 * @param aSecond  the new second element
+	 */
+	public void setSnd(T2 aSecond)
+	{
+		two = aSecond;
+	}
+	
+	/**
+	 * Checks whether two pairs are equal. Note that the pair
+	 * (a,b) is equal to the pair (x,y) if and only if a is
+	 * equal to x and b is equal to y.
+	 * @return true if this pair is equal to aPair. Otherwise
+	 * return false.
+	 */
+	public boolean equals(Object otherObject)
+	{
+		if(otherObject == null)
+		{
+			return false;
+		}
+		
+		if(getClass() != otherObject.getClass())
+		{
+			return false;
+		}
+		Pair pairObject = (Pair) otherObject;
+		return one.equals(pairObject.fst()) && two.equals(pairObject.snd());
+	}
+	
+	/**
+	 * Generates a string representing this pair. Note that
+	 * the String representing the pair (x,y) is "(x,y)". There
+	 * is no whitespace unless x or y or both contain whitespace
+	 * themselves.
+	 * @return a string representing this pair.
+	 */
+	public String toString()
+	{
+		return "(" + one.toString() + "," + two.toString() + ")";
+	}
+}