Update index.ts

Author: masx200

count-unique-characters-of-all-substrings-of-a-given-string/index.ts

@@ -1,20 +1,20 @@
-function uniqueLetterString(s: string): number {
-    const index = new Map<string, number[]>();
-
-    for (const [i, c] of Array.prototype.entries.call(s)) {
-        const arr = index.get(c) ?? [-1];
-        arr.push(i);
-        index.set(c, arr);
-    }
-    let res = 0;
-
-    for (const arr of index.values()) {
-        arr.push(s.length);
-
-        for (let i = 1; i < arr.length - 1; i++) {
-            res += (arr[i] - arr[i - 1]) * (arr[i + 1] - arr[i]);
-        }
-    }
-    return res;
-}
-export default uniqueLetterString;
+function uniqueLetterString(s: string): number {
+    const index = new Map<string, number[]>();
+
+    for (const [i, c] of Array.prototype.entries.call(s)) {
+        const arr = index.get(c) ?? [-1];
+        arr.push(i);
+        index.set(c, arr);
+    }
+    let res = 0;
+
+    for (const arr of index.values()) {
+        arr.push(s.length);
+
+        for (let i = 1; i < arr.length - 1; i++) {
+            res += (arr[i] - arr[i - 1]) * (arr[i + 1] - arr[i]);
+        }
+    }
+    return res;
+}
+export default uniqueLetterString;