Update 4sum.cpp

kamyu104 · web-flow · commit 025fbea5cac4 · 2020-09-15T07:59:35.000+08:00
diff --git a/C++/4sum.cpp b/C++/4sum.cpp
@@ -14,7 +14,7 @@ class Solution {
                 if (j != i + 1 && nums[j] == nums[j - 1]) {
                     continue;
                 }
-                int total = target - nums[i] - nums[j];
+                const auto& total = target - nums[i] - nums[j];
                 int left = j + 1, right = size(nums) - 1;
                 while (left < right) {
                     if (nums[left] + nums[right] == total) {

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ class Solution {`
`14`	`14`	`if (j != i + 1 && nums[j] == nums[j - 1]) {`
`15`	`15`	`continue;`
`16`	`16`	`}`
`17`		`- int total = target - nums[i] - nums[j];`
	`17`	`+ const auto& total = target - nums[i] - nums[j];`
`18`	`18`	`int left = j + 1, right = size(nums) - 1;`
`19`	`19`	`while (left < right) {`
`20`	`20`	`if (nums[left] + nums[right] == total) {`