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add: 220112-CN

This commit is contained in:
Lam Haoyin 2022-01-12 02:29:53 +08:00
parent 30312e104e
commit 86da1d183a
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GPG Key ID: 8C089CB1A2B7544F
2 changed files with 33 additions and 1 deletions
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32
2201/220112-CN.cpp Normal file
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@ -0,0 +1,32 @@
#include <vector>
/**
* 334. Increasing Triplet Subsequence
* Given an integer array nums, return true if there exists a triple of indices (i, j, k) such that i < j < k and nums[i] < nums[j] < nums[k]. If no such indices exists, return false.
*/
class Solution {
public:
static bool increasingTriplet(const std::vector<int>& nums) {
int n = nums.size();
int overallMinimum = nums[0], solutionMinimum = nums[0], mid = 0x7FFFFFFF;
for (int i = 1; i < n; ++i) {
overallMinimum = std::min(overallMinimum, nums[i]);
if (nums[i] > mid) {
return true;
}
if (nums[i] > overallMinimum && nums[i] <= mid) {
solutionMinimum = overallMinimum;
mid = nums[i];
}
if (nums[i] > solutionMinimum && nums[i] < mid) {
mid = nums[i];
}
}
return false;
}
};
int main() {
return !Solution::increasingTriplet({2, 1, 5, 0, 4, 6});
}

2
2201/CMakeLists.txt
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@ -3,4 +3,4 @@ PROJECT(2201)
SET(CMAKE_CXX_STANDARD 23)
ADD_EXECUTABLE(2201 220111.cpp)
ADD_EXECUTABLE(2201 220112-CN.cpp)