C ++删除向量中的重复条目 [英] C++ Delete Duplicate Entries in a vector

问题描述

我有一个时间向量，在很多地方都有时间重复。时间向量只是文本文件中的一列数据，同一数据文本文件中还有其他几个向量（速度，位置等）。如何根据时间删除重复的条目，同时保留所有其他条目？说：

I have a vector of times, and there are a number of places where the time is duplicated. The time vector is only one column of data from a text file, there are several other vectors (velocity, position, etc) from the same data text file. How do I go about deleting the duplicate entries based on time, while maintaining all the other entries? Say:

if (time[j] == time[j + 1]
{
    do stuff...
}

我实际上有几个向量，所以我将删除

I actually have several vectors, so I will be deleting the duplicate entries from them as well. I need to preserve the order of data in the other vectors (they are not necessarily consecutive.)

我只想删除连续的重复点，所以我需要保留其他向量中的数据顺序（它们不一定是连续的）。 。

I only want to delete consecutive duplicate points.

谢谢。

推荐答案

如果必须保留订购并重复订购不是连续的：

If ordering must be preserved and duplicates are not consecutive:

{
    auto i = time.begin()
    std::set<time::value_type> exists;
    while(i != time.end()) {
        if (exists.insert(*i).second == false)  //it's a duplicate:
            i = time.erase(i);
        else //else not a duplicate
            ++i;
    }
}

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