From 98378115ca92ec44fba8f7c5e63a2c3823e0d780 Mon Sep 17 00:00:00 2001
From: Sam Hadow <sam.hadow@inbox.lv>
Date: Fri, 23 May 2025 22:09:10 +0200
Subject: [PATCH] vector structure

---
 src/main.rs   |   1 +
 src/vector.rs | 155 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 156 insertions(+)
 create mode 100644 src/vector.rs

diff --git a/src/main.rs b/src/main.rs
index a5ce515..cdc084f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,7 @@ mod file;
 mod lll;
 mod matrix;
 mod utils;
+mod vector;
 
 use crate::agcd::agcd;
 use crate::file::parse_file;
diff --git a/src/vector.rs b/src/vector.rs
new file mode 100644
index 0000000..aed0625
--- /dev/null
+++ b/src/vector.rs
@@ -0,0 +1,155 @@
+use rug::Integer;
+use std::{
+    fmt,
+    ops::{Add, Index, IndexMut, Mul, Sub},
+};
+
+macro_rules! int {
+    ($x:expr) => {
+        rug::Integer::from($x)
+    };
+}
+
+#[derive(Clone)]
+pub struct IntVector {
+    elements: Vec<Integer>,
+}
+
+impl IntVector {
+    pub fn init(size: usize) -> Self {
+        Self {
+            elements: vec![Default::default(); size],
+        }
+    }
+
+    pub fn from_vec(elements: Vec<Integer>) -> Self {
+        Self { elements }
+    }
+
+    pub fn size(&self) -> usize {
+        self.elements.len()
+    }
+
+    pub fn mul_scalar(&self, other: &Integer) -> Self {
+        let n = self.size();
+        Self::from_vec((0..n).map(|i| int!(&self.elements[i] * other)).collect())
+    }
+}
+
+impl Add for IntVector {
+    type Output = Self;
+    fn add(self, other: Self) -> Self::Output {
+        assert_eq!(self.size(), other.size());
+        let elements = self
+            .elements
+            .into_iter()
+            .zip(other.elements)
+            .map(|(a, b)| a + b)
+            .collect();
+        IntVector::from_vec(elements)
+    }
+}
+
+impl Sub for IntVector {
+    type Output = Self;
+    fn sub(self, other: Self) -> Self::Output {
+        assert_eq!(self.size(), other.size());
+        let elements = self
+            .elements
+            .into_iter()
+            .zip(other.elements)
+            .map(|(a, b)| a - b)
+            .collect();
+        IntVector::from_vec(elements)
+    }
+}
+
+impl Mul for IntVector {
+    type Output = Integer;
+    fn mul(self, other: Self) -> Self::Output {
+        let n = self.size();
+        assert_eq!(n, other.size());
+        (0..n)
+            .map(|i| Integer::from(&self.elements[i] * &other.elements[i]))
+            .sum()
+    }
+}
+
+impl Index<usize> for IntVector {
+    type Output = Integer;
+
+    fn index(&self, index: usize) -> &Integer {
+        &self.elements[index]
+    }
+}
+
+impl IndexMut<usize> for IntVector {
+    fn index_mut(&mut self, index: usize) -> &mut Integer {
+        &mut self.elements[index]
+    }
+}
+
+impl fmt::Debug for IntVector {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{:?}", self.elements)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_from_vec() {
+        let v = IntVector::from_vec(vec![int!(1), int!(2), int!(3)]);
+        assert_eq!(v.size(), 3);
+        assert_eq!(v[0], int!(1));
+        assert_eq!(v[1], int!(2));
+        assert_eq!(v[2], int!(3));
+    }
+
+    #[test]
+    fn test_add_vectors() {
+        let v1 = IntVector::from_vec(vec![int!(1), int!(2), int!(3)]);
+        let v2 = IntVector::from_vec(vec![int!(4), int!(5), int!(6)]);
+        let result = v1 + v2;
+        assert_eq!(result[0], int!(5));
+        assert_eq!(result[1], int!(7));
+        assert_eq!(result[2], int!(9));
+    }
+
+    #[test]
+    fn test_sub_vectors() {
+        let v1 = IntVector::from_vec(vec![int!(5), int!(7), int!(9)]);
+        let v2 = IntVector::from_vec(vec![int!(4), int!(5), int!(6)]);
+        let result = v1 - v2;
+        assert_eq!(result[0], int!(1));
+        assert_eq!(result[1], int!(2));
+        assert_eq!(result[2], int!(3));
+    }
+
+    #[test]
+    fn test_scalar_multiplication() {
+        let v = IntVector::from_vec(vec![int!(2), int!(3), int!(4)]);
+        let scalar = int!(5);
+        let result = v.mul_scalar(&scalar);
+        assert_eq!(result[0], int!(10));
+        assert_eq!(result[1], int!(15));
+        assert_eq!(result[2], int!(20));
+    }
+
+    #[test]
+    fn test_dot_product() {
+        let v1 = IntVector::from_vec(vec![int!(1), int!(2), int!(3)]);
+        let v2 = IntVector::from_vec(vec![int!(4), int!(5), int!(6)]);
+        let dot = v1 * v2;
+        assert_eq!(dot, int!(32)); // 1*4 + 2*5 + 3*6 = 32
+    }
+
+    #[test]
+    fn test_indexing_mut() {
+        let mut v = IntVector::from_vec(vec![int!(1), int!(2), int!(3)]);
+        v[1] += int!(10);
+        assert_eq!(v[1], int!(12));
+    }
+}