diff --git a/lab2/zad1/gen_asc/Cargo.lock b/lab2/zad1/gen_asc/Cargo.lock
index da56c50..da99ecd 100644
--- a/lab2/zad1/gen_asc/Cargo.lock
+++ b/lab2/zad1/gen_asc/Cargo.lock
@@ -12,7 +12,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "gen_asc"
 version = "0.1.0"
 dependencies = [
- "rand",
+ "libgen",
 ]
 
 [[package]]
@@ -32,6 +32,13 @@ version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
+[[package]]
+name = "libgen"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
diff --git a/lab2/zad1/gen_asc/Cargo.toml b/lab2/zad1/gen_asc/Cargo.toml
index aa353c7..950482e 100644
--- a/lab2/zad1/gen_asc/Cargo.toml
+++ b/lab2/zad1/gen_asc/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rand = "0.8.5"
+libgen = { path = "../libgen" }
diff --git a/lab2/zad1/gen_asc/src/main.rs b/lab2/zad1/gen_asc/src/main.rs
index 34a39ea..62fdc88 100644
--- a/lab2/zad1/gen_asc/src/main.rs
+++ b/lab2/zad1/gen_asc/src/main.rs
@@ -1,6 +1,6 @@
 use std::{env::args, io};
 
-use rand::Rng;
+use libgen::gen_asc;
 
 fn main() -> io::Result<()> {
 
@@ -11,13 +11,9 @@ fn main() -> io::Result<()> {
 
     println!("{}", amount);
 
-    let mut last = -1;
-
-    for i in 1..=amount {
-        let current = rand::thread_rng().gen_range((last + 1)..=(2 * amount - (amount - i)) as i64);
-        println!("{}", current);
-        last = current;
-    }
+    gen_asc(amount)
+        .iter()
+        .for_each(|x| println!("{}", x));
 
     Ok(())
 }
diff --git a/lab2/zad1/gen_desc/Cargo.lock b/lab2/zad1/gen_desc/Cargo.lock
index e4c0c2f..c432d62 100644
--- a/lab2/zad1/gen_desc/Cargo.lock
+++ b/lab2/zad1/gen_desc/Cargo.lock
@@ -12,7 +12,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "gen_desc"
 version = "0.1.0"
 dependencies = [
- "rand",
+ "libgen",
 ]
 
 [[package]]
@@ -32,6 +32,13 @@ version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
+[[package]]
+name = "libgen"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
diff --git a/lab2/zad1/gen_desc/Cargo.toml b/lab2/zad1/gen_desc/Cargo.toml
index d21d1a0..d46effa 100644
--- a/lab2/zad1/gen_desc/Cargo.toml
+++ b/lab2/zad1/gen_desc/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rand = "0.8.5"
+libgen = { path = "../libgen" }
diff --git a/lab2/zad1/gen_desc/src/main.rs b/lab2/zad1/gen_desc/src/main.rs
index 40b987d..ee96448 100644
--- a/lab2/zad1/gen_desc/src/main.rs
+++ b/lab2/zad1/gen_desc/src/main.rs
@@ -1,6 +1,6 @@
 use std::{env::args, io};
 
-use rand::Rng;
+use libgen::gen_desc;
 
 fn main() -> io::Result<()> {
 
@@ -11,14 +11,9 @@ fn main() -> io::Result<()> {
 
     println!("{}", amount);
 
-    let mut last = rand::thread_rng().gen_range((amount)..(2 * amount));
-    println!("{}", last);
-
-    for i in 1..amount {
-        let current = rand::thread_rng().gen_range((amount - i)..(last));
-        println!("{}", current);
-        last = current;
-    }
+    gen_desc(amount)
+        .iter()
+        .for_each(|x| println!("{}", x));
 
     Ok(())
 }
diff --git a/lab2/zad1/gen_rand/Cargo.lock b/lab2/zad1/gen_rand/Cargo.lock
index 29d38de..02aac01 100644
--- a/lab2/zad1/gen_rand/Cargo.lock
+++ b/lab2/zad1/gen_rand/Cargo.lock
@@ -12,7 +12,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "gen_rand"
 version = "0.1.0"
 dependencies = [
- "rand",
+ "libgen",
 ]
 
 [[package]]
@@ -32,6 +32,13 @@ version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
+[[package]]
+name = "libgen"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
diff --git a/lab2/zad1/gen_rand/Cargo.toml b/lab2/zad1/gen_rand/Cargo.toml
index 174aedd..8d566a2 100644
--- a/lab2/zad1/gen_rand/Cargo.toml
+++ b/lab2/zad1/gen_rand/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rand = "0.8.5"
+libgen = { path = "../libgen" }
diff --git a/lab2/zad1/gen_rand/src/main.rs b/lab2/zad1/gen_rand/src/main.rs
index ad762b6..d36e463 100644
--- a/lab2/zad1/gen_rand/src/main.rs
+++ b/lab2/zad1/gen_rand/src/main.rs
@@ -1,6 +1,6 @@
 use std::{env::args, io};
 
-use rand::Rng;
+use libgen::gen_rand;
 
 fn main() -> io::Result<()> {
 
@@ -11,9 +11,9 @@ fn main() -> io::Result<()> {
 
     println!("{}", amount);
 
-    for _ in 1..=amount {
-        println!("{}", rand::thread_rng().gen_range(0..(2 * amount)));
-    }
+    gen_rand(amount)
+        .iter()
+        .for_each(|x| println!("{}", x));
 
     Ok(())
 }
diff --git a/lab2/zad1/libgen/Cargo.lock b/lab2/zad1/libgen/Cargo.lock
new file mode 100644
index 0000000..1da0f1b
--- /dev/null
+++ b/lab2/zad1/libgen/Cargo.lock
@@ -0,0 +1,75 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "getrandom"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.153"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
+
+[[package]]
+name = "libgen"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
diff --git a/lab2/zad1/libgen/Cargo.toml b/lab2/zad1/libgen/Cargo.toml
new file mode 100644
index 0000000..b2ef245
--- /dev/null
+++ b/lab2/zad1/libgen/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "libgen"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+rand = "0.8.5"
diff --git a/lab2/zad1/libgen/src/lib.rs b/lab2/zad1/libgen/src/lib.rs
new file mode 100644
index 0000000..cd3b7df
--- /dev/null
+++ b/lab2/zad1/libgen/src/lib.rs
@@ -0,0 +1,36 @@
+use rand::Rng;
+
+pub fn gen_rand(amount: u64) -> Vec<u64> {
+    (1..=amount)
+        .map(|_| rand::thread_rng().gen_range(0..(2 * amount)))
+        .collect()
+}
+
+pub fn gen_desc(amount: u64) -> Vec<u64> {
+    let mut ret = vec![];
+
+    let mut last = rand::thread_rng().gen_range((amount)..(2 * amount));
+    ret.push(last);
+
+    for i in 1..amount {
+        let current = rand::thread_rng().gen_range((amount - i)..(last));
+        ret.push(current);
+        last = current;
+    }
+
+    ret
+}
+
+pub fn gen_asc(amount: u64) -> Vec<u64> {
+    let mut ret = vec![];
+
+    let mut last = -1;
+
+    for i in 1..=amount {
+        let current = rand::thread_rng().gen_range((last + 1)..=(2 * amount - (amount - i)) as i64);
+        ret.push(current as u64);
+        last = current;
+    }
+
+    ret
+}