In Selection sort technique the list is scanned to find the smallest element and it is then exchanged with the first element, putting the smallest element in its final position i.e at the beginning. Then the list is scanned starting from the second element to find the smallest among the remaining n-1 elements and exchange it with the second element to put the second smallest element in its final position. In general in the ith pass the algorithm searches for the smallest number from the n-i elements and swaps it with the element in the ith position i.e Ai. The list is sorted after n-1 passes.