From f37ed3397b47c8830dd658ed9eee598888553477 Mon Sep 17 00:00:00 2001
From: Sanan507 <227714367+Sanan507@users.noreply.github.com>
Date: Fri, 11 Sep 2026 15:37:45 +0000
Subject: [PATCH] perf: optimize custom array input validation to avoid
 redundant iterations

---
 frontend/src/components/CustomArraySection.tsx | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/frontend/src/components/CustomArraySection.tsx b/frontend/src/components/CustomArraySection.tsx
index 1996b0e..c7ff265 100644
--- a/frontend/src/components/CustomArraySection.tsx
+++ b/frontend/src/components/CustomArraySection.tsx
@@ -40,15 +40,18 @@ export function CustomArraySection({
       return { validNumbers: [], invalidTokens: [], isArrayEmpty: true };
     }
 
-    const tokens = rawText.split(',').map((t) => t.trim()).filter((t) => t.length > 0);
+    const rawTokens = rawText.split(',');
     const valid: number[] = [];
     const invalid: string[] = [];
 
-    for (const token of tokens) {
-      if (/^-?\d+$/.test(token)) {
-        valid.push(Number(token));
-      } else {
-        invalid.push(token);
+    for (let i = 0; i < rawTokens.length; i++) {
+      const token = rawTokens[i].trim();
+      if (token.length > 0) {
+        if (/^-?\d+$/.test(token)) {
+          valid.push(Number(token));
+        } else {
+          invalid.push(token);
+        }
       }
     }