[HAI] week3 intersection array

https://www.interviewbit.com/problems/intersection-of-sorted-arrays/

lib/intersectionSortedArray/intersectionSortedArray.ts

@@ -0,0 +1,20 @@
+export function intersectionSortedArray(a: number[], b: number[]): number[] {
+  let res: number[] = [];
+  let aI = 0;
+  let bI = 0;
+
+  while (aI < a.length && bI < b.length) {
+    let aValue = a[aI];
+    let bValue = b[bI];
+
+    if (aValue === bValue) {
+      res.push(aValue);
+      aI++;
+      bI++;
+    } else {
+      aValue < bValue ? aI++ : bI++;
+    }
+  }
+
+  return res;
+};