摘要：Given an unsorted array of n integers which can contain integers from 1 to n. Some elements can be repeated multiple times and some other elements can... 阅读全文

摘要：这是一道Google电面题：实现一个InterleavingIterator的class，其输入是Iterator>，包含hasNext()和Next()两个方法，要求是调用next()时能够交替输出输入的数据，比如：假设输入是：a1, a2, a3, a4, ..., an;b1, b2, b3,... 阅读全文