1 files changed, 26 insertions, 0 deletions
diff --git a/challenge-264/zapwai/javascript/ch-1.js b/challenge-264/zapwai/javascript/ch-1.js
new file mode 100644
index 0000000000..65f7c084e2
--- /dev/null
+++ b/challenge-264/zapwai/javascript/ch-1.js
@@ -0,0 +1,26 @@
+let str = 'PeRlwEKLy';
+console.log("Input:", str);
+console.log("Output:", proc(str));
+
+function proc(str) {
+    letters = str.split("");
+    let upper = [];
+    let lower = [];
+    for (let l of letters) {
+	if (l.toUpperCase() == l) {
+	    upper.push(l);
+	} else {
+	    lower.push(l);
+	}
+    }
+    common = [];
+    for (let u of upper) {
+	for (let l of lower) {
+	    if (u.toLowerCase() == l) {
+		common.push(u);
+	    }
+	}
+    }
+    common = common.sort();
+    return common[common.length-1];
+}