refactor: Renamed js to nodejs

- feat: Added util module

reverse-integer/nodejs/index.js

@@ -17,6 +17,8 @@ Note:
 Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [−231,  231 − 1]. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.
 */
 
+const { assert }  = require('../../util/js'); 
+
 /**
  * @param {number} x
  * @return {number}
@@ -40,18 +42,21 @@ const reverse = function(x) {
  * Output: 321
  */
 x = 123;
-console.log(reverse(x));
+sol = 321;
+assert(reverse(x) === sol, 'Output: 321');
 
 /* Test Case 2
  * Input: -123
  * Output: -321
  */
 x = -123;
-console.log(reverse(x));
+sol = -321
+assert(reverse(x) === sol, 'Output: -321');
 
 /* Test Case 3
  * Input: 120
  * Output: 21
  */
 x = 120;
-console.log(reverse(x));
+sol = 21;
+assert(reverse(x) == sol, 'Output: 21');

string-to-integer-aoi/nodejs/index.js

@@ -17,12 +17,7 @@
  * Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [−231,  231 − 1]. If the numerical value is out of the range of representable values, INT_MAX (231 − 1) or INT_MIN (−231) is returned.
 
 */
-const assert = function(condition, message) {
-  if(!condition) {
-    console.error(` ${message}`);
-  }
-  console.log(` ${message}`);
-}
+const { assert }  = require('../../util/js'); 
 
 /**
  * @param {string} str

util/js/index.js

@@ -0,0 +1,8 @@
+module.exports.assert = (condition, message) => {
+  if(condition) {
+    console.log(` ${message}`);
+  }
+  else {
+    console.error(` ${message}`);
+  }
+}

zig-zag-conversion/nodejs/index.js

@@ -25,6 +25,7 @@ Y A   H R
 P     I
 */
 
+const { assert }  = require('../../util/js'); 
 /**
  * @param {string} s
  * @param {number} numRows
@@ -95,7 +96,8 @@ let s, numRows;
 
 s = 'PAYPALISHIRING';
 numRows = 3;
-console.log(convert(s, numRows));
+sol = 'PAHNAPLSIIGYIR';
+assert(convert(s, numRows) == sol, 'Output: "PAHNAPLSIIGYIR"');
 
 /* Test Case 2
  * Input: s = "PAYPALISHIRING", numRows = 4
@@ -103,7 +105,8 @@ console.log(convert(s, numRows));
  */
 s =  'PAYPALISHIRING';
 numRows = 4;
-console.log(convert(s, numRows));
+sol = 'PINALSIGYAHRPI';
+assert(convert(s, numRows) == sol, 'Output: "PINALSIGYAHRPI"');
 
 /* Test Case 3
  * Input: s = "AB", numRows = 1
@@ -111,4 +114,5 @@ console.log(convert(s, numRows));
  */
 s =  'AB';
 numRows = 1;
-console.log(convert(s, numRows));
+sol = 'AB';
+assert(convert(s, numRows) == sol, 'Output: "AB"');