GetChars made faster

harshad1 · Aug 12, 2023 · 7faa0db · 7faa0db
1 parent 7ae90c2
commit 7faa0db
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/app/src/main/java/net/gsantner/markor/frontend/textview/TextViewUtils.java b/app/src/main/java/net/gsantner/markor/frontend/textview/TextViewUtils.java
@@ -214,6 +214,11 @@ public static int[] countChars(final CharSequence s, final char... chars) {
      * @return number of instances of each char in [start, end)
      */
     public static int[] countChars(final CharSequence s, int start, int end, final char... chars) {
+        // Faster specialization for the common single case
+        if (chars.length == 1) {
+            return new int[] {countChar(s, start, end, chars[0])};
+        }
+
         final int[] counts = new int[chars.length];
         start = Math.max(0, start);
         end = Math.min(end, s.length());
@@ -232,6 +237,9 @@ public static int countChar(final CharSequence s, final char c) {
         return countChar(s, 0, s.length(), c);
     }
 
+    /**
+     * Count instances of a single char in a charsequence
+     */
     public static int countChar(final CharSequence s, int start, int end, final char c) {
         start = Math.max(0, start);
         end = Math.min(end, s.length());