使用 C# 按相同字符串在列表中出现的频率对列表进行排序

Question

I have a list:

dave
maggie
john
stuart
john
john
dave
john
maggie
maggie

My desired result would be:

john
john
john
john
maggie
maggie
maggie
dave
dave
stuart

Answer 1

First I group them. Then order them by the count from each group. Lastly use SelectMany to get a flat structure from each individual name in the groups.

var myList = new List<string>()
{
    "dave",
    "maggie",
    "john",
    "stuart",
    "john",
    "dave",
    "john",
};

var result = myList
    .GroupBy(x => x)
    .OrderByDescending(x => x.Count())
    .SelectMany(x => x)
    .ToList();