In python, I set: x=1 y=3
z = x x = y y = z This gave me 3 1, which are the values of x and y swapped. The following would have given me the same result: x, y = y, x But could the swapping be done using less extra memory than this? What is the minimum amount of extra memory required to exchange two 32-bit quantities? What would be the pseudocode that achieves this minimum? -- http://mail.python.org/mailman/listinfo/python-list
