From author talks and exhibitions to festivals, lectures, and offbeat events, here’s your guide to the DMV’s most eclectic spring offerings.
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. You may assume no duplicates in the array.
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1. 可以把integer -> string -> char array. 2. 或者就 count += num << i & 1 Count how many 1 in binary representation of a 32-bit integer.
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