Renamed i and j loop variables to row and col where applicable. Added some comments.

6 files changed, 35 insertions, 26 deletions

diff --git a/Sem. 03/Solutions/08. Triangle.cpp b/Sem. 03/Solutions/08. Triangle.cpp
index ca25b0e..fa2b501 100644
--- a/Sem. 03/Solutions/08. Triangle.cpp
+++ b/Sem. 03/Solutions/08. Triangle.cpp
@@ -7,9 +7,9 @@ int main()
 	int n;
 	cin >> n;
 
-	for (int i = 1; i <= n; i++)
+	for (int row = 1; row <= n; row++)
 	{
-		for (int j = 0; j < i; j++)
+		for (int col = 0; col < row; col++)
 			cout << "$ ";
 
 		cout << endl;
diff --git a/Sem. 03/Solutions/09. Lefthand_Triangle.cpp b/Sem. 03/Solutions/09. Lefthand_Triangle.cpp
index 183aea8..1aba6c7 100644
--- a/Sem. 03/Solutions/09. Lefthand_Triangle.cpp
+++ b/Sem. 03/Solutions/09. Lefthand_Triangle.cpp
@@ -7,16 +7,18 @@ int main()
 	int n;
 	cin >> n;
 
-	for (int i = -n + 1; i < n; i++)
+	for (int row = -n + 1; row < n; row++)
 	{
-		int absI = ((i > 0) ? i : -i), number = 0;
+		int absRow = ((row > 0) ? row : -row);
 
-		for (int j = n - absI; j > 0; j--)
-			(number *= 10) += j;
-
-		for (int j = absI; j > 0; j--)
+		for (int col = absRow; col > 0; col--)
 			cout << " ";
 
-		cout << number << endl;
+		int numberOnLine = 0;
+
+		for (int col = n - absRow; col > 0; col--)
+			(numberOnLine *= 10) += col;
+
+		cout << numberOnLine << endl;
 	}
 }
diff --git a/Sem. 03/Solutions/10. Spiral_Numbers.cpp b/Sem. 03/Solutions/10. Spiral_Numbers.cpp
index 5a3dced..66e5e70 100644
--- a/Sem. 03/Solutions/10. Spiral_Numbers.cpp
+++ b/Sem. 03/Solutions/10. Spiral_Numbers.cpp
@@ -15,9 +15,9 @@ int main()
 			if (col == 0)
 				cout << previous << " ";
 			else if (col % 2 == 0)
-				cout << (previous += row*2 + 1) << " ";
+				cout << (previous += row * 2 + 1) << " ";
 			else
-				cout << (previous += (n-row-1) * 2 + 1) << " ";
+				cout << (previous += (n -row -1) * 2 + 1) << " ";
 		}
 		cout << endl;
 	}
diff --git a/Sem. 03/Solutions/11. Spiral_Numbers_2.cpp b/Sem. 03/Solutions/11. Spiral_Numbers_2.cpp
index f6bc2d4..b7337a4 100644
--- a/Sem. 03/Solutions/11. Spiral_Numbers_2.cpp
+++ b/Sem. 03/Solutions/11. Spiral_Numbers_2.cpp
@@ -7,20 +7,24 @@ int main()
 	int n;
 	cin >> n;
 
-	for (int i = 0, previous = 0; i < n; i++)
+	for (int row = 0, previous = 0; row < n; row++)
 	{
 		int modifier = 1;
-		if (i % 2 == 1)
+
+		// When going from right to left, make previous be the number at the end of the line + 1, and then decrement
+		if (row % 2 == 1)
 		{
 			previous += n + 1;
 			modifier = -1;
 		}
-			
-		for (int j = 0; j < n; j++)
+
+		for (int col = 0; col < n; col++)
 			cout << (previous += modifier) << " ";
 
 		cout << endl;
-		if (i % 2 == 1)
+
+		// Account for decrementing when gong from right to left
+		if (row % 2 == 1)
 			previous += n - 1;
 	}
 }
diff --git a/Sem. 03/Solutions/12. Frame.cpp b/Sem. 03/Solutions/12. Frame.cpp
index 6347ead..a91c907 100644
--- a/Sem. 03/Solutions/12. Frame.cpp
+++ b/Sem. 03/Solutions/12. Frame.cpp
@@ -7,13 +7,13 @@ int main()
 	int n;
 	cin >> n;
 
-	for (int i = 0; i < n; i++)
+	for (int row = 0; row < n; row++)
 	{
-		bool onFirstOrLastLine = (i == 0 || i == n-1);
+		bool onFirstOrLastLine = (row == 0 || row == n-1);
 
 		cout << ((onFirstOrLastLine) ? "+" : "|");
 
-		for (int j = 0; j < n - 2; j++)
+		for (int col = 0; col < n - 2; col++)
 			cout << "-";
 
 		cout << ((onFirstOrLastLine) ? "+" : "|") << endl;
diff --git a/Sem. 03/Solutions/14. Tree.cpp b/Sem. 03/Solutions/14. Tree.cpp
index c6ee5cd..1955730 100644
--- a/Sem. 03/Solutions/14. Tree.cpp
+++ b/Sem. 03/Solutions/14. Tree.cpp
@@ -7,21 +7,24 @@ int main()
 	int n;
 	cin >> n;
 
-	for (int i = 1; i <= n; i++)
+	// Tree crown
+	for (int row = 1; row <= n; row++)
 	{
-		for (int j = n - i; j > 0; j--)
+		for (int col = n - row; col > 0; col--)
 			cout << " ";
 
-		for (int j = -i + 1; j < i; j++)
-			cout << i - ((j < 0) ? -j : j);
+		for (int col = -row + 1; col < row; col++)
+			cout << row - ((col < 0) ? -col : col);
 
 		cout << endl;
 	}
-	for (int i = n - 1; i > 0; i--)
+
+	// Tree trunk
+	for (int row = n - 1; row > 0; row--)
 	{
-		for (int j = n - 1; j > 0; j--)
+		for (int col = n - 1; col > 0; col--)
 			cout << " ";
 
-		cout << i << endl;
+		cout << row << endl;
 	}
 }