Create 1679-max-number-of-k-sum-pairs.js

Author: everthis

1679-max-number-of-k-sum-pairs.js

@@ -0,0 +1,19 @@
+/**
+ * @param {number[]} nums
+ * @param {number} k
+ * @return {number}
+ */
+const maxOperations = function(nums, k) {
+   const m = new Map()
+   let res = 0
+   for(let e of nums) {
+     if(!m.has(e)) m.set(e, 0)
+     if(m.has(k - e) && m.get(k - e)) {
+       res++
+       m.set(k - e, m.get(k - e) - 1)
+     } else {
+       m.set(e, m.get(e) + 1)
+     }
+   }
+   return res;
+};