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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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Task/Stem-and-leaf-plot/Java/stem-and-leaf-plot.java Normal file
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import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
public class StemAndLeaf {
private static int[] data = { 12, 127, 28, 42, 39, 113, 42, 18, 44, 118,
44, 37, 113, 124, 37, 48, 127, 36, 29, 31, 125, 139, 131, 115, 105,
132, 104, 123, 35, 113, 122, 42, 117, 119, 58, 109, 23, 105, 63,
27, 44, 105, 99, 41, 128, 121, 116, 125, 32, 61, 37, 127, 29, 113,
121, 58, 114, 126, 53, 114, 96, 25, 109, 7, 31, 141, 46, 13, 27,
43, 117, 116, 27, 7, 68, 40, 31, 115, 124, 42, 128, 52, 71, 118,
117, 38, 27, 106, 33, 117, 116, 111, 40, 119, 47, 105, 57, 122,
109, 124, 115, 43, 120, 43, 27, 27, 18, 28, 48, 125, 107, 114, 34,
133, 45, 120, 30, 127, 31, 116, 146 };
public static Map<Integer, List<Integer>> createPlot(int... data){
Map<Integer, List<Integer>> plot = new TreeMap<Integer, List<Integer>>();
int highestStem = -1; //for filling in stems with no leaves
for(int datum:data){
int leaf = datum % 10;
int stem = datum / 10; //integer division
if(stem > highestStem){
highestStem = stem;
}
if(plot.containsKey(stem)){
plot.get(stem).add(leaf);
}else{
LinkedList<Integer> list = new LinkedList<Integer>();
list.add(leaf);
plot.put(stem, list);
}
}
if(plot.keySet().size() < highestStem + 1 /*highest stem value and 0*/ ){
for(int i = 0; i <= highestStem; i++){
if(!plot.containsKey(i)){
LinkedList<Integer> list = new LinkedList<Integer>();
plot.put(i, list);
}
}
}
return plot;
}
public static void printPlot(Map<Integer, List<Integer>> plot){
for(Map.Entry<Integer, List<Integer>> line : plot.entrySet()){
Collections.sort(line.getValue());
System.out.println(line.getKey() + " | " + line.getValue());
}
}
public static void main(String[] args){
Map<Integer, List<Integer>> plot = createPlot(data);
printPlot(plot);
}
}