Update worst_best_time_complexity,

leetcode_two_sum
This commit is contained in:
Yudong Jin
2023-02-03 18:53:15 +08:00
parent 592965595e
commit 70dead5cd0
24 changed files with 63 additions and 121 deletions

View File

@@ -5,6 +5,7 @@
const std = @import("std");
const inc = @import("include");
// 方法一:暴力枚举
const SolutionBruteForce = struct {
pub fn twoSum(self: *SolutionBruteForce, nums: []i32, target: i32) [2]i32 {
_ = self;
@@ -23,6 +24,7 @@ const SolutionBruteForce = struct {
}
};
// 方法二:辅助哈希表
const SolutionHashMap = struct {
pub fn twoSum(self: *SolutionHashMap, nums: []i32, target: i32) ![2]i32 {
_ = self;

View File

@@ -21,6 +21,8 @@ pub fn randomNumbers(comptime n: usize) [n]i32 {
// 查找数组 nums 中数字 1 所在索引
pub fn findOne(nums: []i32) i32 {
for (nums) |num, i| {
// 当元素 1 在数组头部时,达到最佳时间复杂度 O(1)
// 当元素 1 在数组尾部时,达到最差时间复杂度 O(n)
if (num == 1) return @intCast(i32, i);
}
return -1;