TERMINAL: Fix autocomplete for mixed case strings (bitburner-official…

…#1323)

src/utils/StringHelperFunctions.ts

@@ -59,17 +59,16 @@ function longestCommonStart(strings: string[]): string {
     return "";
   }
 
-  const A: string[] = strings.concat().sort();
-  const a1: string = A[0];
-  const a2: string = A[A.length - 1];
-  const L: number = a1.length;
-  let i = 0;
-  const areEqualCaseInsensitive = (a: string, b: string) => a.toUpperCase() === b.toUpperCase();
-  while (i < L && areEqualCaseInsensitive(a1.charAt(i), a2.charAt(i))) {
-    i++;
+  const a1: string = strings[0];
+  for (let i = 0; i < a1.length; ++i) {
+    const chr = a1.charAt(i).toUpperCase();
+    for (let s = 1; s < strings.length; ++s) {
+      if (chr !== strings[s].charAt(i).toUpperCase()) {
+        return a1.substring(0, i);
+      }
+    }
   }
-
-  return a1.substring(0, i);
+  return a1;
 }
 
 // Returns whether an array contains entirely of string objects