✨ [771] too ez ...

Author: enkr1

771/my_solution.js

@@ -0,0 +1,45 @@
+/**
+ * @param {string} jewels
+ * @param {string} stones
+ * @return {number}
+ */
+const numJewelsInStones = (jewels, stones) => {
+  let count = 0, jMap = new Map();
+
+  for (let i = 0; i < jewels.length; i++) {
+    jMap.set(jewels[i], (jMap.get(jewels[i]) || 0) + 1);
+  }
+
+  for (let i = 0; i < stones.length; i++) {
+    if (jMap.has(stones[i])) count++;
+  }
+
+  return count;
+};
+
+// from chatgpt
+/**
+ * @param {string} jewels
+ * @param {string} stones
+ * @return {number}
+ */
+function numJewelsInStones2(jewels, stones) {
+  const jewelSet = new Set(jewels);
+  let count = 0;
+
+  console.log("jewelSet")
+  console.log(jewelSet)
+
+  for (let i = 0; i < stones.length; i++) {
+    if (jewelSet.has(stones[i])) {
+      count++;
+    }
+  }
+
+  return count;
+}
+
+
+let x = numJewelsInStones("aA", "aAAbbbb")
+
+console.log(x)

771/solution.js

@@ -0,0 +1,18 @@
+/**
+ * @param {string} jewels
+ * @param {string} stones
+ * @return {number}
+ */
+const numJewelsInStones = (jewels, stones) => {
+  let count = 0, jMap = new Map();
+
+  for (let i = 0; i < jewels.length; i++) {
+    jMap.set(jewels[i], (jMap.get(jewels[i]) || 0) + 1);
+  }
+
+  for (let i = 0; i < stones.length; i++) {
+    if (jMap.has(stones[i])) count++;
+  }
+
+  return count;
+};