lostecho/grokking_algorithms
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Changed code style according to new Java versions

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Changed long and ugly type declarations with "var" keyword (Java 10).  Also fixed warning about raw usage of HashSet without type specification.
This commit is contained in:
Alexander Danilchenko
2020-01-12 18:34:55 +02:00
committed by GitHub
parent d8da439590
commit 52a5a7cc24
1 changed files with 7 additions and 8 deletions
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15
08_greedy_algorithms/java/01_set_covering/src/SetCovering.java
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@@ -1,10 +1,9 @@
import java.util.*;
public class SetCovering {
public static void main(String[] args) {
Set<String> statesNeeded = new HashSet(Arrays.asList("mt", "wa", "or", "id", "nv", "ut", "ca", "az"));
Map<String, Set<String>> stations = new LinkedHashMap<>();
public static void main(String... args) {
var statesNeeded = new HashSet<>(Arrays.asList("mt", "wa", "or", "id", "nv", "ut", "ca", "az"));
var stations = new LinkedHashMap<String, Set<String>>();
stations.put("kone", new HashSet<>(Arrays.asList("id", "nv", "ut")));
stations.put("ktwo", new HashSet<>(Arrays.asList("wa", "id", "mt")));
@@ -12,13 +11,13 @@ public class SetCovering {
stations.put("kfour", new HashSet<>(Arrays.asList("nv", "ut")));
stations.put("kfive", new HashSet<>(Arrays.asList("ca", "az")));
Set<String> finalStations = new HashSet<String>();
var finalStations = new HashSet<String>();
while (!statesNeeded.isEmpty()) {
String bestStation = null;
Set<String> statesCovered = new HashSet<>();
var statesCovered = new HashSet<String>();
for (Map.Entry<String, Set<String>> station : stations.entrySet()) {
Set<String> covered = new HashSet<>(statesNeeded);
for (var station : stations.entrySet()) {
var covered = new HashSet<>(statesNeeded);
covered.retainAll(station.getValue());
if (covered.size() > statesCovered.size()) {