From 7ded24a34b778997207f1f3b795491289277cded Mon Sep 17 00:00:00 2001
From: YiHui Liu <liuyihui02@gmail.com>
Date: Wed, 18 May 2022 23:27:05 +0800
Subject: [PATCH] fix: matrix init and assignment

---
 G4.code-workspace |  3 ++-
 include/Matrix.h  | 10 ++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/G4.code-workspace b/G4.code-workspace
index 79e8674..21e9d73 100644
--- a/G4.code-workspace
+++ b/G4.code-workspace
@@ -119,7 +119,8 @@
 			"style_parser": "cpp",
 			"vmanip": "cpp",
 			"element": "cpp",
-			"tree": "cpp"
+			"tree": "cpp",
+			"vertices": "cpp"
 		}
 	}
 }
\ No newline at end of file
diff --git a/include/Matrix.h b/include/Matrix.h
index 3888598..b7e7568 100644
--- a/include/Matrix.h
+++ b/include/Matrix.h
@@ -41,10 +41,11 @@ matrix<T>::matrix(int n, int m) {
 
 template <class T>
 matrix<T>::matrix(const matrix<T>& A) {
-    size_t number = A.n * A.m;
+    n = A.n, m = A.m;
     element = new T*[n];
     for (int i = 0; i < n; i++) element[i] = new T[m];
-    std::copy(A.element, A.element + number, element);
+    for (int i = 0; i < n; i++)
+        for (int j = 0; j < m; j++) element[i][j] = A.element[i][j];
 }
 
 template <class T>
@@ -54,10 +55,11 @@ template <class T>
 matrix<T>& matrix<T>::operator=(const matrix<T>& A) {
     if (this != &A) {
         delete[] element;
-        size_t number = A.n * A.m;
+        n = A.n, m = A.m;
         element = new T*[n];
         for (int i = 0; i < n; i++) element[i] = new T[m];
-        std::copy(A.element, A.element + number, element);
+        for (int i = 0; i < n; i++)
+            for (int j = 0; j < m; j++) element[i][j] = A.element[i][j];
     }
     return *this;
 }