Refactored Running Sum of 1d Array.java

varunu28 · web-flow · commit 656c1a05cb1a · 2021-05-03T09:49:24.000-07:00
diff --git a/Easy/Running Sum of 1d Array.java b/Easy/Running Sum of 1d Array.java
@@ -1,10 +1,8 @@
 class Solution {
   public int[] runningSum(int[] nums) {
     int[] ans = new int[nums.length];
-    int sum = 0;
     for (int i = 0; i < nums.length; i++) {
-      sum += nums[i];
-      ans[i] = sum;
+      ans[i] = nums[i] + (i == 0 ? 0 : ans[i - 1]);
     }
     return ans;
   }

Original file line number	Diff line number	Diff line change
`@@ -1,10 +1,8 @@`
`1`	`1`	`class Solution {`
`2`	`2`	`public int[] runningSum(int[] nums) {`
`3`	`3`	`int[] ans = new int[nums.length];`
`4`		`- int sum = 0;`
`5`	`4`	`for (int i = 0; i < nums.length; i++) {`
`6`		`- sum += nums[i];`
`7`		`- ans[i] = sum;`
	`5`	`+ ans[i] = nums[i] + (i == 0 ? 0 : ans[i - 1]);`
`8`	`6`	`}`
`9`	`7`	`return ans;`
`10`	`8`	`}`