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Author: JustDevRae

JustDevRae/Set/pick_random_k_numbers.js

@@ -0,0 +1,18 @@
+function solution(arr, k) {
+  const uniqueSet = new Set();
+  const result = [];
+
+  for (const num of arr) {
+    if (!uniqueSet.has(num)) {
+      uniqueSet.add(num);
+      result.push(num);
+    }
+    if (result.length === k) break;
+  }
+
+  while (result.length < k) {
+    result.push(-1);
+  }
+
+  return result;
+}