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37 lines
938 B
37 lines
938 B
// File: binary_search_test.go
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// Created Time: 2022-12-05
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// Author: Slone123c (274325721@qq.com)
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package chapter_searching
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import (
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"fmt"
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"testing"
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)
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func TestBinarySearch(t *testing.T) {
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var (
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target = 6
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nums = []int{1, 3, 6, 8, 12, 15, 23, 26, 31, 35}
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expected = 2
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)
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// 在数组中执行二分查找
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actual := binarySearch(nums, target)
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fmt.Println("目标元素 6 的索引 =", actual)
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if actual != expected {
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t.Errorf("目标元素 6 的索引 = %d, 应该为 %d", actual, expected)
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}
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}
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func TestBinarySearchEdge(t *testing.T) {
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target := 6
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nums := []int{1, 3, 6, 6, 6, 6, 6, 10, 12, 15}
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// 二分查找最左一个元素
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indexLeft := binarySearchLeftEdge(nums, target)
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fmt.Println("数组中最左一个元素 6 的索引 = ", indexLeft)
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// 二分查找最右一个元素
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indexRight := binarySearchRightEdge(nums, target)
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fmt.Println("数组中最右一个元素 6 的索引 = ", indexRight)
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}
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