Update Product of the Last K Numbers.java

varunu28 · web-flow · commit 6a4ed92bae9b · 2022-09-07T07:33:11.000-07:00
diff --git a/Medium/Product of the Last K Numbers.java b/Medium/Product of the Last K Numbers.java
@@ -1,21 +1,24 @@
 class ProductOfNumbers {
-  List<Integer> list;
+
+  private List<Integer> list;
+  
   public ProductOfNumbers() {
+    this.list = new ArrayList<>();
     add(0);
   }
 
   public void add(int num) {
     if (num > 0) {
       list.add(list.get(list.size() - 1) * num);
-    }
-    else {
+    } else {
       list = new ArrayList<>();
       list.add(1);
     }
   }
 
   public int getProduct(int k) {
-    return k < list.size() ? list.get(list.size() - 1) / list.get(list.size() - k - 1) : 0;
+    int n = list.size();
+    return k < n ? list.get(n - 1) / list.get(n - k - 1) : 0;
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1,21 +1,24 @@`
`1`	`1`	`class ProductOfNumbers {`
`2`		`- List<Integer> list;`
	`2`	`+`
	`3`	`+ private List<Integer> list;`
	`4`	`+`
`3`	`5`	`public ProductOfNumbers() {`
	`6`	`+ this.list = new ArrayList<>();`
`4`	`7`	`add(0);`
`5`	`8`	`}`
`6`	`9`
`7`	`10`	`public void add(int num) {`
`8`	`11`	`if (num > 0) {`
`9`	`12`	`list.add(list.get(list.size() - 1) * num);`
`10`		`- }`
`11`		`- else {`
	`13`	`+ } else {`
`12`	`14`	`list = new ArrayList<>();`
`13`	`15`	`list.add(1);`
`14`	`16`	`}`
`15`	`17`	`}`
`16`	`18`
`17`	`19`	`public int getProduct(int k) {`
`18`		`- return k < list.size() ? list.get(list.size() - 1) / list.get(list.size() - k - 1) : 0;`
	`20`	`+ int n = list.size();`
	`21`	`+ return k < n ? list.get(n - 1) / list.get(n - k - 1) : 0;`
`19`	`22`	`}`
`20`	`23`	`}`
`21`	`24`