Create 6.Z 字形变换.js

Author: yinxin630

6.Z 字形变换.js

@@ -0,0 +1,21 @@
+/**
+ * @param {string} s
+ * @param {number} numRows
+ * @return {string}
+ */
+var convert = function(s, numRows) {
+    const t = [];
+    for (let i = 0; i < numRows; i++) {
+        t[i] = [];
+    }
+    
+    for (let i = 0, j = 0, inc = (numRows > 1 ? 1 : 0); i < s.length; i++) {
+        t[j].push(s[i]);
+        j += inc;
+        if (j === 0 || j === numRows - 1) {
+            inc = -inc;
+        }
+    }
+
+    return t.map(arr => arr.join('')).join('');
+};