1 files changed, 4 insertions, 4 deletions
diff --git a/datastructures/fenwickTree.cpp b/datastructures/fenwickTree.cpp
index cd30329..86b1138 100644
--- a/datastructures/fenwickTree.cpp
+++ b/datastructures/fenwickTree.cpp
@@ -1,19 +1,19 @@
-vector<int> FT; //Fenwick-Tree
+vector<int> FT; // Fenwick-Tree
 int n;
 
-//Adds val to index i. Time Complexity O(log(n))
+// Addiert val zum Element an Index i. O(log(n)).
 void updateFT(int i, int val) {
 	i++; while(i <= n) { FT[i] += val; i += (i & (-i)); }
 }
 
-//Build an Fenwick-Tree over an array a. Time Complexity: O(n*log(n))
+// Baut Baum auf. O(n*log(n)).
 void buildFenwickTree(vector<int>& a) {
   n = a.size();
   FT.assign(n+1,0);
   for(int i = 0; i < n; i++)  updateFT(i,a[i]);
 }
 
-//Prefix-Sum of intervall [0..i]. Time Complexity: O(log(n))
+// Präfix-Summe über das Intervall [0..i]. O(log(n)).
 int prefix_sum(int i) {
   int sum = 0; i++;
   while(i > 0) { sum += FT[i]; i -= (i & (-i)); }