add solution 03-june

Author: aTan-aka-Xellos

.gitignore

@@ -24,3 +24,4 @@ out/
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+/leetcode.iml

june_challange/src/DeleteNodeInLinkedList.java

@@ -0,0 +1,19 @@
+/**
+ * https://leetcode.com/explore/challenge/card/june-leetcoding-challenge/539/week-1-june-1st-june-7th/3348/
+ */
+public class DeleteNodeInLinkedList {
+
+    // WTF?
+    public void deleteNode(ListNode node) {
+
+            node.val = node.next.val;
+            node.next = node.next.next;
+
+    }
+
+    public class ListNode {
+        int val;
+        ListNode next;
+        ListNode(int x) { val = x; }
+    }
+}

june_challange/src/TwoCityScheduling.java

@@ -0,0 +1,25 @@
+import java.util.Arrays;
+
+/**
+ * See TwoCityScheduling_1029.java
+ */
+public class TwoCityScheduling {
+
+    public static int twoCitySchedCost(int[][] costs) {
+
+        int[] diff = new int[costs.length];
+        int sum = 0;
+        for (int i = 0; i < costs.length; i++) {
+            diff[i] = costs[i][0] - costs[i][1];
+            sum += costs[i][0];
+        }
+
+        Arrays.sort(diff);
+
+        for (int i = diff.length / 2; i < diff.length; i++) {
+            sum -= diff[i];
+        }
+
+        return sum;
+    }
+}