Create 168-excel-sheet-column-title.js

Author: everthis

168-excel-sheet-column-title.js

@@ -0,0 +1,22 @@
+/**
+ * @param {number} n
+ * @return {string}
+ */
+const convertToTitle = function(n) {
+    if (n === 0) {
+        return ''
+    }
+    const res = [];
+    const hash = {};
+    ('ABCDEFGHIJKLMNOPQRSTUVWXYZ').split('').forEach((el,idx) => {
+        hash[idx] = el
+    })
+ 
+    while(n > 0) {
+        n--;
+        res.unshift(hash[n % 26]);
+        n = Math.floor(n / 26);
+    }
+
+    return res.join('')
+};