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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/zig/chapter_binary_search/binary_search.zig
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@ -12,7 +12,7 @@ fn binarySearch(comptime T: type, nums: std.ArrayList(T), target: T) T {
var j: usize = nums.items.len - 1;
// 循环，当搜索区间为空时跳出（当 i > j 时为空）
while (i <= j) {
var m = (i + j) / 2; // 计算中点索引 m
var m = i + (j - i) / 2; // 计算中点索引 m
if (nums.items[m] < target) { // 此情况说明 target 在区间 [m+1, j] 中
i = m + 1;
} else if (nums.items[m] > target) { // 此情况说明 target 在区间 [i, m-1] 中
@ -32,7 +32,7 @@ fn binarySearchLCRO(comptime T: type, nums: std.ArrayList(T), target: T) T {
var j: usize = nums.items.len;
// 循环，当搜索区间为空时跳出（当 i = j 时为空）
while (i <= j) {
var m = (i + j) / 2; // 计算中点索引 m
var m = i + (j - i) / 2; // 计算中点索引 m
if (nums.items[m] < target) { // 此情况说明 target 在区间 [m+1, j) 中
i = m + 1;
} else if (nums.items[m] > target) { // 此情况说明 target 在区间 [i, m) 中