Artemis: Artemis PR

app/src/main/java/control/Single.java

@@ -11,15 +11,7 @@ public class Single {
    * @return The sum of the first n natural numbers.
    */
   public static int sumRange(int n) {
-    int[] arr = new int[n];
-    int sum = 0;
-    for (int i = 0; i < n; i++) {
-      arr[i] = i;
-    }
-    for (int i : arr) {
-      sum += i;
-    }
-    return sum;
+    return n * (n - 1) / 2;
   }
 
   /**
@@ -29,7 +21,10 @@ public static int sumRange(int n) {
    * @return The maximum value in the array.
    */
   public static int maxArray(int[] arr) {
-    int max = 0;
+    if (arr == null || arr.length == 0) {
+      return Integer.MIN_VALUE; // Or throw an exception
+    }
+    int max = arr[0];
     for (int i : arr) {
       if (i > max) {
         max = i;
@@ -45,13 +40,10 @@ public static int maxArray(int[] arr) {
    * @param m The modulus.
    */
   public static int sumModulus(int n, int m) {
-    Vector<Integer> multiples = new Vector<Integer>();
-    for (int i = 0; i < n; i++) {
-      if (i % m == 0) {
-        multiples.add(i);
-      }
+    int sum = 0;
+    for (int i = 0; i < n; i += m) {
+      sum += i;
     }
-
-    return multiples.stream().mapToInt(Integer::valueOf).sum();
+    return sum;
   }
 }

app/src/main/java/datastructures/DsVector.java

@@ -1,6 +1,7 @@
 package datastructures;
 
 import java.util.Vector;
+import java.util.Collections;
 
 public class DsVector {
   /**
@@ -40,16 +41,7 @@ public static Vector<Integer> searchVector(Vector<Integer> v, int n) {
    */
   public static Vector<Integer> sortVector(Vector<Integer> v) {
     Vector<Integer> ret = new Vector<Integer>(v);
-
-    for (int i = 0; i < ret.size(); i++) {
-      for (int j = 0; j < ret.size() - 1; j++) {
-        if (ret.get(j) > ret.get(j + 1)) {
-          int temp = ret.get(j);
-          ret.set(j, ret.get(j + 1));
-          ret.set(j + 1, temp);
-        }
-      }
-    }
+    Collections.sort(ret);
     return ret;
   }
 
@@ -106,4 +98,4 @@ public static Vector<Integer> mergeVectors(Vector<Integer> v1,
     }
     return ret;
   }
-}
+}