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g0301_0400.s0335_self_crossing.readme.md Maven / Gradle / Ivy

335\. Self Crossing

Hard

You are given an array of integers `distance`.

You start at point `(0,0)` on an **X-Y** plane and you move `distance[0]` meters to the north, then `distance[1]` meters to the west, `distance[2]` meters to the south, `distance[3]` meters to the east, and so on. In other words, after each move, your direction changes counter-clockwise.

Return `true` if your path crosses itself, and `false` if it does not.

**Example 1:**

![](https://assets.leetcode.com/uploads/2021/03/14/selfcross1-plane.jpg)

**Input:** distance = [2,1,1,2]

**Output:** true

**Example 2:**

![](https://assets.leetcode.com/uploads/2021/03/14/selfcross2-plane.jpg)

**Input:** distance = [1,2,3,4]

**Output:** false

**Example 3:**

![](https://assets.leetcode.com/uploads/2021/03/14/selfcross3-plane.jpg)

**Input:** distance = [1,1,1,1]

**Output:** true

**Constraints:**

*   1 <= distance.length <= 105
*   1 <= distance[i] <= 105