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author | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
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committer | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
commit | 7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch) | |
tree | eb7a24ee2067f92245c57bb118e85a1baf15df50 /other/non_overlapping_interval.cpp | |
parent | 5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff) | |
download | leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip |
chore: move cpp and rust code to directory
Diffstat (limited to 'other/non_overlapping_interval.cpp')
-rw-r--r-- | other/non_overlapping_interval.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/other/non_overlapping_interval.cpp b/other/non_overlapping_interval.cpp new file mode 100644 index 0000000..228f691 --- /dev/null +++ b/other/non_overlapping_interval.cpp @@ -0,0 +1,38 @@ +// 435. Non-overlapping Intervals +#include "leetcode.h" + +/* + * given an array of intervals 'intervals' where 'intervals[i] = [start[i], + * end[i]]', return the minimum number of intervals you need to remove to make + * the rest of the intervals non-overlapping + */ + +class Solution { + static bool cmp(vector<int> &a, vector<int> &b) { return a[1] < b[1]; } + +public: + int eraseOverlapIntervals(vvd & intervals) { + int ans = -1; + if (!intervals.size()) + return 0; + sort(intervals.begin(), intervals.end(), cmp); + vector<int> prev = intervals[0]; + for (vector<int> i : intervals) { + if (prev[1] > i[0]) + ans++; + else + prev = i; + } + return ans; + } +}; + +int main() { + Solution obj; + vvd i1 = {{1, 2}, {2, 3}, {3, 4}, {1, 3}}; + vvd i2 = {{1, 2}, {1, 2}, {1, 2}}; + vvd i3 = {{1, 2}, {2, 3}}; + printf("%d\n", obj.eraseOverlapIntervals(i1)); // expect: 1 + printf("%d\n", obj.eraseOverlapIntervals(i2)); // expect: 2 + printf("%d\n", obj.eraseOverlapIntervals(i3)); // expect: 0 +} |