Create reverse_integer.js

Author: Jaskaran Singh

reverse_integer.js

@@ -0,0 +1,30 @@
+/**
+ * @param {number} x
+ * @return {number}
+ */
+var reverse = function(x) {
+    let isNeg;
+    let min = Math.pow(-2, 31);
+    let max = Math.pow(2, 31) - 1;
+    
+    if(x < 0)
+        isNeg = 1;
+    
+	x = x.toString();
+    
+    for(let i = x.length-1; i >= 0; i--) {
+        x = x.concat(x[i]);
+    }
+    
+    x = x.substring(x.length/2, x.length);
+    
+    x = parseInt(x);
+    
+    if(x < min || x > max)
+        return 0;
+    
+    if(isNeg)
+        x = -x;
+    
+    return x;
+};