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Sort Game History by descending play count #132

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Sort Game History by descending play count #132

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36 changes: 24 additions & 12 deletions GameHistoryTracker.java
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
import java.io.IOException;
Expand Down Expand Up @@ -35,24 +34,37 @@ public void recordPlay(final String gameName, final Integer score) {
}

/**
* Displays a summary of play history and scores.
* Displays a summary of play history sorted in descending order
* along with corresponding scores, if any.
*/
public void displayHistory() {
System.out.println("\n=== Game Play History ===");
if (statsMap.isEmpty()) {
System.out.println("No games played yet.");
return;
}
for (Map.Entry<String, GameStats> entry : statsMap.entrySet()) {
String game = entry.getKey();
GameStats stats = entry.getValue();
System.out.printf("%s - Played: %d", game, stats.timesPlayed);
if (!stats.scores.isEmpty()) {
double avg = stats.totalScore / (double) stats.scores.size();
System.out.printf(", Avg Score: %.2f", avg);
}
System.out.println();
}
statsMap.entrySet().stream()
.sorted((a, b) -> {
int cmp = Integer.compare(
b.getValue().getTimesPlayed(),
a.getValue().getTimesPlayed()
);
return (cmp == 0)
? a.getKey().compareToIgnoreCase(b.getKey())
: cmp;
})
.forEach(entry -> {
String game = entry.getKey();
GameStats stats = entry.getValue();
System.out.printf("%s - Played: %d",
game, stats.getTimesPlayed());
if (!stats.scores.isEmpty()) {
double avg =
stats.totalScore / (double) stats.scores.size();
System.out.printf(", Avg Score: %.2f", avg);
}
System.out.println();
});
}

/**
Expand Down