add ts

Author: AkifhanIlgaz

typescript/0904-fruit-into-baskets.ts

@@ -0,0 +1,23 @@
+function totalFruit(fruits: number[]): number {
+    let count = new Map();
+    let [left, total, res] = [0, 0, 0];
+
+    for (let fruit of fruits) {
+        count.set(fruit, (count.get(fruit) || 0) + 1);
+        total++;
+
+        while (count.size > 2) {
+            let f = fruits[left];
+            count.set(f, count.get(f) - 1);
+            total--;
+            left++;
+            if (!count.get(f)) {
+                count.delete(f);
+            }
+        }
+
+        res = Math.max(res, total);
+    }
+
+    return res;
+}