Mock pe2018 s1 (#409)

* Mock PE library.

* take_array, drop_array for pe_library.

* assert_compiled, with q1 and q2 solutions.

* Obfuscated the compiled solution. Check 01s repo for source.

* Bump version

Author: blackening

package.json

@@ -1,7 +1,7 @@
 {
   "private": true,
   "name": "cadet-frontend",
-  "version": "1.0.17",
+  "version": "1.0.18",
   "scripts-info": {
     "format": "Format source code",
     "start": "Start the Webpack development server",

public/externalLibs/assert_compiled.js

@@ -36,6 +36,8 @@ function loadAllLibs() {
     '/externalLibs/tree.js',
     // streams
     '/externalLibs/streams/stream.js',
+    '/externalLibs/pe_library.js',
+    '/externalLibs/assert_compiled.js'
   ];
 
   for (var i = 0; i < files.length; i++) {

public/externalLibs/index.js

@@ -0,0 +1,58 @@
+function is_array(x) {
+    if (Array.isArray === undefined) {
+        return x instanceof Array;
+    } else {
+        return Array.isArray(x);
+    }
+}
+
+function map_array(f, ls){
+    let res = [];
+    let len = ls.length;
+    for(let i = 0; i < len; i++){
+        res.push(f(ls[i]));
+    }
+    return res;
+}
+function accumulate_array(op, init, ls){
+    for(let i = 0; i < ls.length; i++){
+        init = op(ls[i], init);
+    }
+    return init;
+}
+
+function filter_array(f, ls){
+    let res = [];
+    for(let i = 0; i < ls.length; i++){
+        if(f(ls[i])){
+            res.push(ls[i]);
+        }
+    }
+    return res;
+}
+
+function enum_array(a,b){
+    let res = [];
+    for(let i = a; a <= b; a++){
+        res.push(a);
+    }
+    return res;
+}
+
+function take_array(xs, n){
+    let res = [];
+    let arr_len = xs.length;
+    for(let i = 0; i < n; i = i + 1){
+        res[i] = xs[i];
+    }
+    return res;
+}
+
+function drop_array(xs, n){
+    let res = [];
+    let arr_len = xs.length;
+    for(let i = n; i < arr_len; i = i + 1){
+        res.push(xs[i]);
+    }
+    return res;
+}