I got an input array $=[6,5,4,1,3,2]$ and I want the output to be $[5,4,3,3,2]$

Following the condition:

$1.$ From each value in the array, one by one, if the left value is bigger than the right value, replace it with right value.

$2.$ In case that the value is smaller than both left value and right value, replace the middle value with the minimum of left value and right value.