Update Challenge.java (#95)

Update Challenge.java (#95) Co-authored-by: GL <[email protected]>
ByteLegendQuest · Jul 8, 2023 · 5c0b902 · 5c0b902
2 parents 8e633c5 + 8cecb68
commit 5c0b902
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/main/java/com/bytelegend/Challenge.java b/src/main/java/com/bytelegend/Challenge.java
@@ -17,7 +17,7 @@ public static void main(String[] args) {
      * (`+`).
      */
     public static int multiplyBy31(int n) {
-        return 0;
+        return (n << 5) - n;
     }
 
     /**
@@ -32,6 +32,6 @@ public static int multiplyBy31(int n) {
      * addition sign (`+`).
      */
     public static int divideBy2ThenMinus1(int n) {
-        return 0;
+        return n >= 0 ? (n >> 1) - 1 : (n - 1) >> 1;
     }
 }