38 lines
933 B
Java
38 lines
933 B
Java
package pair1;
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/**
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* @version 1.01 2012-01-26
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* @author Cay Horstmann
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*/
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public class PairTest1
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{
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public static void main(String[] args)
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{
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String[] words = { "Mary", "had", "a", "little", "lamb" };
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Pair<String> mm = ArrayAlg.minmax(words);
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System.out.println("min = " + mm.getFirst());
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System.out.println("max = " + mm.getSecond());
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}
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}
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class ArrayAlg
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{
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/**
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* Gets the minimum and maximum of an array of strings.
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* @param a an array of strings
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* @return a pair with the min and max value, or null if a is null or empty
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*/
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public static Pair<String> minmax(String[] a)
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{
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if (a == null || a.length == 0) return null;
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String min = a[0];
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String max = a[0];
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for (int i = 1; i < a.length; i++)
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{
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if (min.compareTo(a[i]) > 0) min = a[i];
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if (max.compareTo(a[i]) < 0) max = a[i];
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}
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return new Pair<>(min, max);
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}
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}
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