Description Submission
Left Rotation
Description Submission References insert: http://www.cplusplus.com/reference/vector/vector/insert/ vector constructor: http://www.cplusplus.com/reference/vector/vector/vector/
Fraudulent Activity Notifications
Description Submission Counting sort O(200N) When d is even and d/2, d/2+1 lies in the middle is a special case
Frequency Queries
Submission Build index on the number of occurrences Otherwise, in linear query, one case will exceed the time limit
Arrays – DS
Description Submissions Submission I Submission II References https://stackoverflow.com/questions/28148205/copy-a-vector-to-another-vector-in-reverse-order/28148217 http://www.cplusplus.com/reference/algorithm/reverse_copy/