1 files changed, 35 insertions, 2 deletions
diff --git a/android/WALT/app/src/main/java/org/chromium/latency/walt/Utils.java b/android/WALT/app/src/main/java/org/chromium/latency/walt/Utils.java
index 19c7488..46796e2 100644
--- a/android/WALT/app/src/main/java/org/chromium/latency/walt/Utils.java
+++ b/android/WALT/app/src/main/java/org/chromium/latency/walt/Utils.java
@@ -18,11 +18,15 @@ package org.chromium.latency.walt;
 
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.preference.PreferenceManager;
-import android.support.annotation.StringRes;
+
+import androidx.preference.PreferenceManager;
+import androidx.annotation.StringRes;
+
+import com.github.mikephil.charting.data.Entry;
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 
 /**
  * Kitchen sink for small utility functions
@@ -120,6 +124,11 @@ public class Utils {
         return sb.toString();
     }
 
+    public static int argmax(double[] a) {
+        int imax = 0;
+        for (int i=1; i<a.length; i++) if (a[i] > a[imax]) imax = i;
+        return imax;
+    }
 
     public static int argmin(double[] a) {
         int imin = 0;
@@ -177,6 +186,30 @@ public class Utils {
         return preferences.getString(context.getString(keyId), defaultValue);
     }
 
+    static float min(List<Entry> entries) {
+        float min = Float.MAX_VALUE;
+        for (Entry e : entries) {
+            min = Math.min(min, e.getY());
+        }
+        return min;
+    }
+
+    static float max(List<Entry> entries) {
+        float max = Float.MIN_VALUE;
+        for (Entry e : entries) {
+            max = Math.max(max, e.getY());
+        }
+        return max;
+    }
+
+    static float mean(List<Entry> entries) {
+        float mean = 0;
+        for (Entry e : entries) {
+            mean += e.getY()/entries.size();
+        }
+        return mean;
+    }
+
     public enum ListenerState {
         RUNNING,
         STARTING,