Can you guys please help me with basic insertion sorting in C#. I have a list of names and city of residence in a array and need to sort this array by comparing the city of resi
int[] newarr = {2,1,5,3,7,6};
int a, b;
for (int i = 1; i < newarr.Length; i++)
{
a = newarr[i];
b = i - 1;
while(b>=0 && newarr[b]>a)
{
newarr[b+1] = newarr[b];
b=b-1;
}
newarr[b+1] = a;
}
Try like this...
public void InsertionSort()
{
for (int i = 0; i < Count; i++)
{
int j = i;
While(j > 0)
{
Student cur = Attendees[j];
Student sel = Attendees[j-1];
if (cur.CompareTo(Sel) < 0)
{
Student temp = cur;
cur = sel;
sel = temp;
j--
}
else
break;
}
}
}
public void InsertionSort()
{
for (int i = 1; i < Count; i++) // Iterate beginning at 1, because we assume that 0 is already sorted
{
for (int j = i; j > 0; j--) // Iterate backwards, starting from 'i'
{
Student cur = Attendees[j - 1];
Student tbs = Attendees[j]; // 'tbs' == "to be sorted"
if (cur.CompareTo(tbs) < 0) // usually, classes that implement 'CompareTo()' also implement 'operator <()', 'operator >()' and 'operator ==()', so you could have just written 'cur < tbs'
{
Student temp = Attendees[j];
Attendees[j] = Attendees[j - 1];
Attendees[j - 1] = temp;
}
else
break; // since 'tbs' is no longer > 'cur', it is part of our sorted list. We don't need to sort that particular 'tbs' any further
}
}
}
Keep in mind, that this algorithm sorts your list in descending order.