From a6233090f6700d2c4b34d30c9e50c6b113b722d2 Mon Sep 17 00:00:00 2001
From: deadmarshal <adeadmarshal@gmail.com>
Date: Thu, 12 Oct 2023 13:16:43 +0330
Subject: TWC238

---
 challenge-238/deadmarshal/java/Ch1.java | 20 ++++++++++++++
 challenge-238/deadmarshal/java/Ch2.java | 46 +++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 challenge-238/deadmarshal/java/Ch1.java
 create mode 100644 challenge-238/deadmarshal/java/Ch2.java

(limited to 'challenge-238/deadmarshal/java')

diff --git a/challenge-238/deadmarshal/java/Ch1.java b/challenge-238/deadmarshal/java/Ch1.java
new file mode 100644
index 0000000000..43b8f25e2b
--- /dev/null
+++ b/challenge-238/deadmarshal/java/Ch1.java
@@ -0,0 +1,20 @@
+public class Ch1 {
+  public static void main(String[] args) {
+    int[] arr1 = {1,2,3,4,5};
+    int[] arr2 = {1,1,1,1,1};
+    int[] arr3 = {0,-1,1,2};
+    running_sum(arr1);
+    running_sum(arr2);
+    running_sum(arr3);  
+  }
+
+  private static void running_sum(int[] arr) {
+    int sum = 0;
+    for(var e : arr){
+      sum += e;
+      System.out.printf("%d ",sum);
+    }
+    System.out.println();
+  }
+}
+
diff --git a/challenge-238/deadmarshal/java/Ch2.java b/challenge-238/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..0a71d431a4
--- /dev/null
+++ b/challenge-238/deadmarshal/java/Ch2.java
@@ -0,0 +1,46 @@
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    ArrayList<Integer> list1 = new ArrayList<>(List.of(15,99,1,34));
+    ArrayList<Integer> list2 = new ArrayList<>(List.of(50,25,33,22));
+    persistence_sort(list1);
+    persistence_sort(list2);
+    System.out.println(list1);
+    System.out.println(list2);
+  }
+
+  private static int product(int n) {
+    int prod = 1;
+    while(n > 0)
+    {
+      prod *= n % 10;
+      n /= 10;
+    }
+    return prod;
+  }
+
+  private static int helper(int n) {
+    int sum = 0;
+    while(n >= 10)
+    {
+      sum++;
+      n = product(n);
+    }
+    return sum;
+  }
+  
+  private static void persistence_sort(List<Integer> list) {
+    list.sort(new Comparator<Integer>() {
+      @Override
+      public int compare(Integer a, Integer b) {
+      	int ha = helper(a);
+      	int hb = helper(b);
+      	return ha == hb ? Integer.compare(a,b) : 
+	  Integer.compare(ha,hb);
+      }});
+  }
+}
+
-- 
cgit