diff --git a/src/main/java/com/cool/hot100/stack/Num739.java b/src/main/java/com/cool/hot100/stack/Num739.java
new file mode 100644
index 0000000..52b9402
--- /dev/null
+++ b/src/main/java/com/cool/hot100/stack/Num739.java
@@ -0,0 +1,35 @@
+package com.cool.hot100.stack;
+
+import org.junit.Test;
+
+import java.util.Deque;
+import java.util.LinkedList;
+
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @Author: Cool
+ * @Date: 2024/09/17/17:55
+ * DayNumber 1
+ * Hard 2
+ * Level 6
+ */
+public class Num739 {
+    public int[] dailyTemperatures(int[] temperatures) {
+        Deque<Integer> stack = new LinkedList<Integer>();
+        int[] res = new int[temperatures.length];
+        for (int i = 0; i < temperatures.length; i++) {
+            while (!stack.isEmpty() && temperatures[stack.peek()] < temperatures[i]) {
+                int temp = stack.pop();
+                res[temp] = i - temp;
+            }
+            stack.push(i);
+        }
+        return res;
+    }
+    @Test
+    public void test(){
+        dailyTemperatures(new int[]{73,74,75,71,69,72,76,73});
+    }
+}