Pony.ai 笔试

第一题 暴力AC

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    static int[] check(int[] a) {
        int n = a.length;
        int[] c = new int[n];
        c[0] = a[0];
        int d = a[1] - a[0];
        for (int i = 1; i < n; i++) {
            c[i] = c[i - 1] + d;
            if (c[i] < 0) {
                return null;
            }
            if (c[i] % a[i] > 0) {
                return null;
            }
            int t = c[i] / a[i];
            if ((t & (t - 1)) != 0) {
                return null;
            }
        }
        return c;
    }
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] a = new int[n];
        for (int i = 0; i < n; i++) {
            a[i] = in.nextInt();
        }
        int x = a[0];
        int y = a[1];
        for (int i = 0; i < 100; i++) {
            for (int j = 0; j < 100; j++) {
                a[0] <<= i;
                a[1] <<= j;
                int[] c = check(a);
                if (c != null) {
                    Arrays.stream(c).forEach(System.out::println);
                    return;
                }
                a[0] = x;
                a[1] = y;
            }
        }
    }
}

第二题. 76%
最后2分钟想到坑点了

BBBBBW
WWWW..
BBBBBW
WWWW..

这种情况是不合法的
但是

BBBBB
....B
....B
....B
....B

是合法的。
可惜已经没空写了。
第三题。物理渣。理化生就物理最差。混了个64%。刚刚看有个大佬AC了，也发帖了，可以参考他的。

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        while (n-- > 0) {
            /*
            x = rcosθ+x0-r
            y = rsinθ+y0
             */
            double l0, v0, l1, v1, x0, y0, r, x1, y1;
            l0 = in.nextInt();
            v0 = in.nextInt();
            l1 = in.nextInt();
            v1 = in.nextInt();
            x0 = in.nextInt();
            y0 = in.nextInt();
            r = in.nextInt();
            x1 = in.nextInt();
            y1 = in.nextInt();
            double θ = Math.acos((x1 + r - x0) / r);
            double inR = θ * r;
            double outR = inR + l0;
            double tAin = inR / v0;
            double tAout = outR / v0; // tAin .. tAout
            double y2 = r*Math.sin(θ)+y0;
            double y3 = y2-l1;
            double tBin = (y1 - y2) / v1;
            double tBout = (y1 - y3) / v1;
            if (tAout <= tBin  || tBout <= tAin) {
                System.out.println("No");
            } else {
                System.out.println("Yes");
            }
        }
    }
}