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几何运用题
2022-06-09 03:50:00 【王六六的IT日常】
参考题解:
【宫水三叶】简单计算几何运用题
一共三个点,分别使用两个点计算向量,随后判断向量叉积是否为 0。
class Solution {
public boolean isBoomerang(int[][] points) {
int[] v1 = {
points[1][0] - points[0][0], points[1][1] - points[0][1]};
int[] v2 = {
points[2][0] - points[0][0], points[2][1] - points[0][1]};
return v1[0] * v2[1] - v1[1] * v2[0] != 0;
}
}
class Solution {
public boolean isBoomerang(int[][] ps) {
return (ps[1][0] - ps[0][0]) * (ps[2][1] - ps[0][1]) != (ps[2][0] - ps[0][0]) * (ps[1][1] - ps[0][1]);
}
}
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