leetcode/src/s0739_daily_temperatures.cpp
Sainnhe Park ac57b13edb
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continuous-integration/drone/push Build is passing
s0739
2022-12-16 15:08:10 +08:00

28 lines
666 B
C++

#include "s0739_daily_temperatures.hpp"
vector<int> S0739::dailyTemperatures(vector<int>& temperatures) {
int len = temperatures.size();
if (len == 0) {
return vector<int> {};
} else if (len == 1) {
return vector<int> {0};
}
// 栈中的元素为向量的下标
// 向量下标对应的元素从栈底到栈顶单调递增
stack<int> s;
s.push(0);
// 初始化 ans 中的所有元素为 0
vector<int> ans(len, 0);
for (int i{1}; i < len; ++i) {
while (temperatures[i] > temperatures[s.top()]) {
ans[s.top()] = i - s.top();
s.pop();
if (s.empty()) {
break;
}
}
s.push(i);
}
return ans;
}