List<bool> myList = new List<bool>(); myList.Add(false); myList.Add(false); myList.Add(true); myList.Add(false); myList.Add(true); // Get index of first element int p = myList.IndexOf(true); // Result: 2 // Get index of last element int p1 = myList.LastIndexOf(true); // Result: 4 // Get index of first element int index = myList.FindIndex(a => a == true); // Result: 2 // Get index of last element int index1 = myList.FindLastIndex(a => a == true); // Result: 4
List<int> true_indexes = myList.Select((value, index) => value ? index : -1).Where(o => o >= 0).ToList();
var
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