Java tutorial
//package com.java2s; import android.graphics.PointF; import java.util.List; public class Main { /** * Search of first index of growing y. * * @param valPoints Y points, first index is searched from. * @return Index of first growing value. */ private static int findStartIndex(List<PointF> valPoints) { for (int i = 0; i < valPoints.size() - 1; i++) { if (valPoints.get(i).y < valPoints.get(i + 1).y) { return i; } } return -1; } }