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Refactor the section of bianry search.

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krahets
2023-05-21 04:51:32 +08:00
parent 921d87c238
commit c3e7455285
22 changed files with 76 additions and 161 deletions
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4
codes/dart/chapter_binary_search/binary_search.dart
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@ -10,7 +10,7 @@ int binarySearch(List<int> nums, int target) {
int i = 0, j = nums.length - 1;
// 循环，当搜索区间为空时跳出（当 i > j 时为空）
while (i <= j) {
int m = (i + j) ~/ 2; // 计算中点索引 m
int m = i + (j - i) ~/ 2; // 计算中点索引 m
if (nums[m] < target) {
// 此情况说明 target 在区间 [m+1, j] 中
i = m + 1;
@ -32,7 +32,7 @@ int binarySearchLCRO(List<int> nums, int target) {
int i = 0, j = nums.length;
// 循环，当搜索区间为空时跳出（当 i = j 时为空）
while (i < j) {
int m = (i + j) ~/ 2; // 计算中点索引 m
int m = i + (j - i) ~/ 2; // 计算中点索引 m
if (nums[m] < target) {
// 此情况说明 target 在区间 [m+1, j) 中
i = m + 1;