Minor improvement.

fcyu · Jun 5, 2017 · 1096e83 · 1096e83
1 parent 840dfd4
commit 1096e83
Showing 1 changed file with 13 additions and 5 deletions.
diff --git a/src/main/java/proteomics/Types/AA.java b/src/main/java/proteomics/Types/AA.java
@@ -4,18 +4,26 @@ public class AA {
 
     public final char aa;
     public final float delta_mass;
+    private final String toString;
+    private final int hashCode;
 
     public AA(char aa, float delta_mass) {
         this.aa = aa;
         this.delta_mass = delta_mass;
-    }
-
-    public String toString() {
         if (Math.abs(delta_mass) > 1e-6) {
-            return String.format("%c[%.2f]", aa, delta_mass);
+            toString = String.format("%c[%.2f]", aa, delta_mass);
         } else {
-            return String.valueOf(aa);
+            toString = String.valueOf(aa);
         }
+        hashCode = toString.hashCode();
+    }
+
+    public String toString() {
+        return toString;
+    }
+
+    public int hashCode() {
+        return hashCode;
     }
 
     public boolean equals(Object other) {