diff --git a/sort.c b/sort.c
index b43ee6e..0ab2110 100644
--- a/sort.c
+++ b/sort.c
@@ -21,7 +21,17 @@ typedef struct {
 void
 insert_sort(int *arr, size_t sz)
 {
-	// <YOURCODE>
+	for (size_t i = 1; i < sz; i++) {
+		int key = arr[i];
+		size_t j = i;
+
+		
+		while (j > 0 && arr[j - 1] > key) {
+			arr[j] = arr[j - 1];
+			j--;
+		}
+		arr[j] = key;
+	}
 }
 
 void
@@ -33,7 +43,7 @@ bubble_sort(int *arr, size_t sz)
 	for (i = 0; i < sz; i++) {
 		for (j = i + 1; j < sz; j++) {
 			if (arr[i] > arr[j]) {
-				tmp = arr[i];
+ 				tmp = arr[i];
 				arr[i] = arr[j];
 				arr[j] = tmp;
 			}
@@ -67,8 +77,29 @@ bubble_sort(int *arr, size_t sz)
 static void
 _merge(int *tmp, int *a, int *b, int *end)
 {
-	// <YOURCODE>
-}
+	int a1=0, b1=0, tmp1=0;
+	int razmera=b-a, razmerb=end-b;
+	while (razmera>a1 && razmerb>b1)
+	{
+		if (a[a1]<b[b1])
+		{
+			tmp[tmp1++] = a[a1++];
+		}
+		else
+		{
+			tmp[tmp1++] = b[b1++];
+		}
+	}
+	while (razmera!=a1)
+	{
+		tmp[tmp1++]=a[a1++];
+	}
+	while (razmerb!=b1)
+	{
+		tmp[tmp1++]=a[b1++];
+	}
+
+}	
 
 static void
 _merge_sort_int(int *tmp, int *arr, size_t n)