Vnicius

class SnappingLinearLayoutManager(val context: Context) : LinearLayoutManager(context) {
    override fun smoothScrollToPosition(recyclerView: RecyclerView?, state: RecyclerView.State?, position: Int) {
        val smoothScroller = object : LinearSmoothScroller(context) {
            override fun getVerticalSnapPreference(): Int = SNAP_TO_START
            override fun computeScrollVectorForPosition(targetPosition: Int): PointF 
                    = this@SnappingLinearLayoutManager.computeScrollVectorForPosition(targetPosition)
        }
        smoothScroller.targetPosition = position
        startSmoothScroll(smoothScroller)
    }

Vnicius

import numpy as np

def GENP(A, b):
    '''
    Gaussian elimination with no pivoting.
    % input: A is an n x n nonsingular matrix
    %        b is an n x 1 vector
    % output: x is the solution of Ax=b.
    % post-condition: A and b have been modified. 
    '''