// LeetCode 3516: Find Closest Person
// 難度: Easy
// 日期: 2025-09-04

package main

import "fmt"

// TODO: 實作解法
func findClosest(x, y, z int) int {
    distanceX := abs(x - z)
    distanceY := abs(y - z)

    if distanceX == distanceY{
        return 0
    }else if distanceX > distanceY{
        return 2
    }else{
        return 1
    }
}

func abs(n int) int{
    if n < 0 {
        return -n
    }
    return n
}

func main() {
    testCase1()
    testCase2()
    testCase3()
}

// 基本測試案例 - Example 1
func testCase1() {
    // Input: x = 2, y = 7, z = 4
    // Expected: 1 (Person 1 距離較近: |2-4| = 2 < |7-4| = 3)
    actual := findClosest(2, 7, 4)
    expected := 1
    fmt.Printf("Test 1: Input(2, 7, 4) Expected: %d, Actual: %d, Result: %s\n", 
        expected, actual, getResult(actual == expected))
}

// 基本測試案例 - Example 2
func testCase2() {
    // Input: x = 2, y = 5, z = 6
    // Expected: 2 (Person 2 距離較近: |5-6| = 1 < |2-6| = 4)
    actual := findClosest(2, 5, 6)
    expected := 2
    fmt.Printf("Test 2: Input(2, 5, 6) Expected: %d, Actual: %d, Result: %s\n", 
        expected, actual, getResult(actual == expected))
}

// 基本測試案例 - Example 3
func testCase3() {
    // Input: x = 1, y = 5, z = 3
    // Expected: 0 (距離相等: |1-3| = 2 = |5-3| = 2)
    actual := findClosest(1, 5, 3)
    expected := 0
    fmt.Printf("Test 3: Input(1, 5, 3) Expected: %d, Actual: %d, Result: %s\n", 
        expected, actual, getResult(actual == expected))
}

func getResult(pass bool) string {
    if pass {
        return "PASS"
    }
    return "FAIL"
}