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// my linkedin : https://www.linkedin.com/in/vaalarivan-prasanna-3a07bb203/
list = new ArrayList<int> {3, 4, 7}; //initialising a list
Collections.reverse(list); //reverses a List or an ArrayList
//now, list is {7, 4, 3}
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public void reverse()
{
for (int i = 0; i < size/2; i++)
{
int temp = get(i);
elementData[i] = elementData[size-i-1];
elementData[size-i-1] = temp;
}
}