diff --git a/src/main/java/com/cool/ling_cha_mount/stack/Num1475.java b/src/main/java/com/cool/ling_cha_mount/stack/Num1475.java
new file mode 100644
index 0000000..79548f4
--- /dev/null
+++ b/src/main/java/com/cool/ling_cha_mount/stack/Num1475.java
@@ -0,0 +1,23 @@
+package com.cool.ling_cha_mount.stack;
+
+import org.junit.Test;
+
+import java.util.Stack;
+
+public class Num1475 {
+    public int[] finalPrices(int[] prices) {
+        Stack<Integer> stack=new Stack<>();
+        for(int i=0;i<prices.length;i++){
+            while(!stack.isEmpty()&&prices[i]<=prices[stack.peek()]){
+                int j=stack.pop();
+                prices[j]=prices[j]-prices[i];
+            }
+            stack.push(i);
+        }
+        return prices;
+    }
+    @Test
+    public void test(){
+        finalPrices(new int[]{8,4,6,2,3});
+    }
+}