Merge pull request #2139 from CodingTestStudy2/정진영

[정진영] 2026/10/06

Author: github-actions[bot]

leetcode3/정진영/125. Valid Palindrome

@@ -0,0 +1,15 @@
+/**
+ * @param {string} s
+ * @return {boolean}
+ */
+var isPalindrome = function(s) {
+    s = s.toLowerCase().replace(/[^a-z0-9]/g, "");
+
+    let m = "";
+
+    for (let i = s.length -1; i >= 0; i--){
+        m += s[i];
+    }
+
+    return s == m;
+};

leetcode3/정진영/447. Number of Boomerangs

@@ -0,0 +1,19 @@
+/**
+ * @param {number[][]} points
+ * @return {number}
+ */
+var numberOfBoomerangs = function(points) {
+
+    for (let i = 0; i < points.length; i++){
+        for (let j = 0; j<points.length; j++){
+            let x1 = points[i][0];
+            let y1 = points[i][1];
+
+            let x2 = points[j][0];
+            let y2 = points[j][1];
+
+            let dis = (x2-x1)**2 + (y2-y1)**2;
+        }
+    }
+
+};