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@ -193,6 +193,22 @@ comments: true
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}
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```
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=== "Kotlin"
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```kotlin title="binary_search_edge.kt"
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/* 二分查找最左一个 target */
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fun binarySearchLeftEdge(nums: IntArray, target: Int): Int {
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// 等价于查找 target 的插入点
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val i = binarySearchInsertion(nums, target)
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// 未找到 target ,返回 -1
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if (i == nums.size || nums[i] != target) {
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return -1
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}
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// 找到 target ,返回索引 i
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return i
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}
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```
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=== "Zig"
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```zig title="binary_search_edge.zig"
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@ -418,6 +434,24 @@ comments: true
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}
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```
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=== "Kotlin"
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```kotlin title="binary_search_edge.kt"
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/* 二分查找最右一个 target */
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fun binarySearchRightEdge(nums: IntArray, target: Int): Int {
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// 转化为查找最左一个 target + 1
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val i = binarySearchInsertion(nums, target + 1)
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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val j = i - 1
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// 未找到 target ,返回 -1
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if (j == -1 || nums[j] != target) {
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return -1
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}
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// 找到 target ,返回索引 j
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return j
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}
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```
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=== "Zig"
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```zig title="binary_search_edge.zig"
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