From a37ed5801f9bbcc05fd13d5f4afb23bc5fa8257d Mon Sep 17 00:00:00 2001
From: Nathan Baltzell <baltzell@jlab.org>
Date: Wed, 12 Aug 2026 16:48:36 -0400
Subject: [PATCH 1/2] add more helpful helper method

---
 .../java/org/jlab/utils/groups/IndexedList.java    | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java b/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
index 21b9aca355..23d440b63e 100644
--- a/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
+++ b/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
@@ -334,10 +334,22 @@ public int getIndex(long hashcode, int order) {
         public int[] getIndices(long hashcode, int... indices) {
             int[] ret = new int[indices.length];
             for (int i=0; i<ret.length; i++)
-                ret[i] = getIndex(hashcode, i);
+                ret[i] = getIndex(hashcode, indices[i]);
             return ret;
         }
 
+        /**
+         * Retrieves an array of the indices.
+         * @param hashcode
+         * @param nindices
+         * @return 
+         */
+        public int[] getIndices(long hashcode, int nindices) {
+            int[] indices = new int[nindices];
+            for (int i=0; i<nindices; i++) indices[i] = i;
+            return getIndices(hashcode, indices);
+        }
+
         /**
          * Returns a formatted string representing all indices in the hash key.
          *

From cf7ff0e5e117adb7a06649d9fc110d4ffebdb8bb Mon Sep 17 00:00:00 2001
From: Nathan Baltzell <baltzell@jlab.org>
Date: Wed, 12 Aug 2026 17:00:08 -0400
Subject: [PATCH 2/2] simplify

---
 .../src/main/java/org/jlab/utils/groups/IndexedList.java   | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java b/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
index 23d440b63e..384e2cb259 100644
--- a/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
+++ b/common-tools/clas-utils/src/main/java/org/jlab/utils/groups/IndexedList.java
@@ -345,9 +345,10 @@ public int[] getIndices(long hashcode, int... indices) {
          * @return 
          */
         public int[] getIndices(long hashcode, int nindices) {
-            int[] indices = new int[nindices];
-            for (int i=0; i<nindices; i++) indices[i] = i;
-            return getIndices(hashcode, indices);
+            int[] ret = new int[nindices];
+            for (int i=0; i<nindices; i++)
+                ret[i] = getIndex(hashcode, i);
+            return ret;
         }
 
         /**