feat(Week04): Add solutions

1 files changed, 27 insertions, 0 deletions

diff --git a/Week04/Exercise02/IntArray.cpp b/Week04/Exercise02/IntArray.cpp
new file mode 100644
index 0000000..2dc0521
--- /dev/null
+++ b/Week04/Exercise02/IntArray.cpp
@@ -0,0 +1,27 @@
+#include "IntArray.h"
+
+int IntArray::At(unsigned index) {
+	if (index < capacity)
+		return elems[index];
+	return 0;
+}
+
+void IntArray::Resize(unsigned capacity) {
+	int* newElems = new int[capacity];
+
+	unsigned copyCount = this->capacity < capacity ? this->capacity : capacity;
+	for (unsigned i = 0; i < copyCount; ++i)
+		newElems[i] = elems[i];
+
+	delete[] elems;
+	elems = newElems;
+	this->capacity = capacity;
+}
+
+void IntArray::Concat(const IntArray& endElements) {
+	unsigned oldCapacity = capacity;
+	Resize(capacity + endElements.capacity);
+
+	for (unsigned i = oldCapacity; i < capacity; ++i)
+		elems[i] = endElements.elems[i - oldCapacity];
+}