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★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★ Given an array After this process, we have some array Return the smallest possible difference between the maximum value of
Example 1: Input: A = 0
Output: 0
Explanation: B = [1]
Example 2: Input: A = 2
Output: 6
Explanation: B = [2,8]
Example 3: Input: A = [1,3,6], K = 3 Output: 0 Explanation: B = [3,3,3] or B = [4,4,4] 给定一个整数数组 在此过程之后,我们得到一些数组 返回
示例 1: 输入:A = [1], K = 0 输出:0 解释:B = [1] 示例 2: 输入:A = [0,10], K = 2 输出:6 解释:B = [2,8] 示例 3: 输入:A = [1,3,6], K = 3 输出:0 解释:B = [3,3,3] 或 B = [4,4,4] 20ms 1 class Solution { 2 //抓住最大值与最大值之间的重点关系, 3 //因为其他数可以通过加减K靠近极值 4 func smallestRangeI(_ A: [Int], _ K: Int) -> Int { 5 //如果数组只有一个数字则返回0 6 if A.count==1{return 0} 7 //初始化最大值 8 var maxNum:Int = A[0] 9 //初始化最小值 10 var minNum:Int = A[0] 11 //遍历数组 12 for i in 0..<A.count 13 { 14 if A[i] > maxNum 15 { 16 maxNum = A[i] 17 } 18 if A[i] < minNum 19 { 20 minNum = A[i] 21 } 22 } 23 if minNum+2*K>=maxNum 24 { 25 return 0 26 } 27 else 28 { 29 return maxNum-minNum-2*K 30 } 31 } 32 } 28ms 1 class Solution { 2 func smallestRangeI(_ A: [Int], _ K: Int) -> Int { 3 var maxA = Int.min 4 var minA = Int.max 5 for a in A { 6 if a > maxA {maxA = a} 7 if a < minA {minA = a} 8 } 9 if maxA - minA <= 2 * K { 10 return 0 11 } 12 return maxA - minA - 2 * K 13 } 14 } |
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