[HAI] week3 two sum withou hashsum

https://leetcode.com/problems/two-sum-ii-input-array-is-sorted

lib/twoSum/twoSum.ts

@@ -0,0 +1,12 @@
+export function twoSum(numbers: number[], target: number): number[] {
+  let L = 0;
+  let R = numbers.length - 1;
+
+  while (L <= R) {
+    const curSum = numbers[L] + numbers[R];
+    if (curSum === target) return [L + 1, R + 1];
+    curSum > target ? R-- : L++;
+  }
+
+  return [-1, -1];
+};