diff --git a/.eslintignore b/.eslintignore
old mode 100644
new mode 100755
diff --git a/.eslintrc.json b/.eslintrc.json
old mode 100644
new mode 100755
diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
diff --git a/.travis.yml b/.travis.yml
old mode 100644
new mode 100755
diff --git a/Exercises.ru.md b/Exercises.ru.md
old mode 100644
new mode 100755
diff --git a/Exercises/1-seq.js b/Exercises/1-seq.js
old mode 100644
new mode 100755
index bdf0fe8..82b100a
--- a/Exercises/1-seq.js
+++ b/Exercises/1-seq.js
@@ -1,5 +1,5 @@
 'use strict';
 
-const seq = f => g => x => 0;
-
+const seq = f => g => x => (typeof x === 'number' ?
+  (typeof f === 'function' ? f(g(x)) : g(x)) : seq(f(g(x))));
 module.exports = { seq };
diff --git a/Exercises/1-seq.test b/Exercises/1-seq.test
old mode 100644
new mode 100755
diff --git a/Exercises/2-array.js b/Exercises/2-array.js
old mode 100644
new mode 100755
index b6d47cf..d7af254
--- a/Exercises/2-array.js
+++ b/Exercises/2-array.js
@@ -1,5 +1,26 @@
 'use strict';
 
-const array = () => null;
+const array = () => {
+  const a = [];
+  const m = i => a[i];
+  const push = obj => a.push(obj);
+  const pop = () => a.pop();
+  Object.assign(m, { push, pop });
+  return m;
+};
+
+const arr = array();
+
+arr.push('first');
+arr.push('second');
+arr.push('third');
+console.log(arr(0)); 
+console.log(arr(1)); 
+console.log(arr(2)); 
+console.log(arr.pop()); 
+console.log(arr.pop()); 
+console.log(arr.pop()); 
+
+console.log(arr.pop());
 
 module.exports = { array };
diff --git a/Exercises/2-array.test b/Exercises/2-array.test
old mode 100644
new mode 100755
diff --git a/JavaScript/1-context.js b/JavaScript/1-context.js
old mode 100644
new mode 100755
diff --git a/JavaScript/2-chain.js b/JavaScript/2-chain.js
old mode 100644
new mode 100755
diff --git a/JavaScript/3-closure.js b/JavaScript/3-closure.js
old mode 100644
new mode 100755
diff --git a/JavaScript/4-closure-recursive.js b/JavaScript/4-closure-recursive.js
old mode 100644
new mode 100755
diff --git a/JavaScript/5-logger.js b/JavaScript/5-logger.js
old mode 100644
new mode 100755
diff --git a/JavaScript/6-functor.js b/JavaScript/6-functor.js
old mode 100644
new mode 100755
diff --git a/JavaScript/7-functor-short.js b/JavaScript/7-functor-short.js
old mode 100644
new mode 100755
diff --git a/JavaScript/8-adder.js b/JavaScript/8-adder.js
old mode 100644
new mode 100755
diff --git a/JavaScript/9-adder-methods.js b/JavaScript/9-adder-methods.js
old mode 100644
new mode 100755
diff --git a/JavaScript/a-adder-line.js b/JavaScript/a-adder-line.js
old mode 100644
new mode 100755
diff --git a/JavaScript/b-adder-on.js b/JavaScript/b-adder-on.js
old mode 100644
new mode 100755
diff --git a/LICENSE b/LICENSE
old mode 100644
new mode 100755
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
diff --git a/knowledge.map b/knowledge.map
old mode 100644
new mode 100755
diff --git a/package-lock.json b/package-lock.json
old mode 100644
new mode 100755
index 53f6ed8..fb6fd81
--- a/package-lock.json
+++ b/package-lock.json
@@ -148,9 +148,9 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
     "concolor": {
-      "version": "0.1.12",
-      "resolved": "https://registry.npmjs.org/concolor/-/concolor-0.1.12.tgz",
-      "integrity": "sha512-8yhwqV92Dngtrf7N2mc0HNCQ7IEZ6M6aXOc0HpHPUhavPcQKvTLnLlaZjEBNilFqHvC3O4AIkcEKdeQ75u0JUw=="
+      "version": "0.1.13",
+      "resolved": "https://registry.npmjs.org/concolor/-/concolor-0.1.13.tgz",
+      "integrity": "sha512-Xazqi7pwBpyP6rQbdANg3hGAlHRSRuhFFXHGQIgWSS7i7Xj7E3BLS9okFpIWvas3UXNkAYLXJa+mNn1zO9DUew=="
     },
     "cross-spawn": {
       "version": "6.0.5",
@@ -410,9 +410,9 @@
       "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
     },
     "hpw": {
-      "version": "0.1.9",
-      "resolved": "https://registry.npmjs.org/hpw/-/hpw-0.1.9.tgz",
-      "integrity": "sha512-ce9MEdtxbR1du5/gJlXXy44H1WPaDFCgY52MPIpExhXlkht36ppiG/zE1CktcJGV6/5fK8lQbtPQr+Tu2LwocA==",
+      "version": "0.1.10",
+      "resolved": "https://registry.npmjs.org/hpw/-/hpw-0.1.10.tgz",
+      "integrity": "sha512-nVYhlidhHoJruAgt6LCtPG27Bnz6jnmKCI61QHMb3MyTg+IRdZQtpWo6e5XSDq3zztl1s1Ev0K5QIq3YoMUERA==",
       "requires": {
         "concolor": "^0.1.12",
         "metasync": "^0.3.31"
diff --git a/package.json b/package.json
old mode 100644
new mode 100755
index 7db5066..621e32d
--- a/package.json
+++ b/package.json
@@ -10,6 +10,6 @@
   },
   "dependencies": {
     "eslint": "^6.7.2",
-    "hpw": "^0.1.9"
+    "hpw": "^0.1.10"
   }
 }