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authorcrupest <crupest@outlook.com>2021-02-23 21:07:19 +0800
committercrupest <crupest@outlook.com>2021-02-23 21:07:19 +0800
commitd8f3b40085619cb680c8f227c65a1f5acc393223 (patch)
tree6a38e3a6c79276fc396259ef962d17236dbed569 /leetcode/cpp/11.cpp
parentb0162802ad9723c678e495f29ca2f0fc0af2eff1 (diff)
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Move leetcode solutions to subdir.
Diffstat (limited to 'leetcode/cpp/11.cpp')
-rw-r--r--leetcode/cpp/11.cpp42
1 files changed, 42 insertions, 0 deletions
diff --git a/leetcode/cpp/11.cpp b/leetcode/cpp/11.cpp
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+#include <vector>
+#include <algorithm>
+
+using std::vector;
+
+class Solution
+{
+public:
+ int maxArea(vector<int> &height)
+ {
+ auto left = height.cbegin();
+ auto right = height.cend();
+ --right;
+
+ int result = 0;
+
+ // although length could be calculated by right - left,
+ // but this can be cached in register.
+ int length = height.size() - 1;
+
+ while (left != right)
+ {
+ const int left_v = *left;
+ const int right_v = *right;
+ const int capacity = std::min(left_v, right_v) * length;
+ result = std::max(capacity, result);
+
+ if (left_v < right_v)
+ {
+ ++left;
+ }
+ else
+ {
+ --right;
+ }
+
+ length--;
+ }
+
+ return result;
+ }
+};