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October 8, 2015 19:31
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Merge two sorted generic lists.
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import java.util.List; | |
import java.util.ArrayList; | |
public class Merge | |
{ | |
public static void main(String args[]) | |
{ | |
List<Integer> a = new ArrayList<Integer>(); | |
List<Integer> b = new ArrayList<Integer>(); | |
a.add(1); | |
a.add(3); | |
b.add(2); | |
b.add(4); | |
System.out.println(merge(a, b)); | |
} | |
public static <E extends Comparable<E>> List<E> merge(List<E> a, List<E> b) | |
{ | |
List<E> m = new ArrayList<E>(); | |
int i1 = 0, i2 = 0; | |
while (i1 < a.size() && i2 < b.size()) | |
{ | |
if (a.get(i1).compareTo(b.get(i2)) <= 0) | |
{ | |
m.add(a.get(i1++)); | |
} | |
else | |
{ | |
m.add(b.get(i2++)); | |
} | |
} | |
while (i1 < a.size()) | |
{ | |
m.add(a.get(i1++)); | |
} | |
while (i2 < b.size()) | |
{ | |
m.add(b.get(i2++)); | |
} | |
return m; | |
} | |
} |
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