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feat: Revised the book (#978)
* Sync recent changes to the revised Word. * Revised the preface chapter * Revised the introduction chapter * Revised the computation complexity chapter * Revised the chapter data structure * Revised the chapter array and linked list * Revised the chapter stack and queue * Revised the chapter hashing * Revised the chapter tree * Revised the chapter heap * Revised the chapter graph * Revised the chapter searching * Reivised the sorting chapter * Revised the divide and conquer chapter * Revised the chapter backtacking * Revised the DP chapter * Revised the greedy chapter * Revised the appendix chapter * Revised the preface chapter doubly * Revised the figures
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@ -19,7 +19,7 @@ public class bucket_sort {
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}
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// 1. 将数组元素分配到各个桶中
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for (float num : nums) {
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// 输入数据范围 [0, 1),使用 num * k 映射到索引范围 [0, k-1]
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// 输入数据范围为 [0, 1),使用 num * k 映射到索引范围 [0, k-1]
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int i = (int) (num * k);
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// 将 num 添加进桶 i
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buckets.get(i).add(num);
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@ -40,7 +40,7 @@ public class heap_sort {
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}
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// 从堆中提取最大元素,循环 n-1 轮
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for (int i = nums.length - 1; i > 0; i--) {
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// 交换根节点与最右叶节点(即交换首元素与尾元素)
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// 交换根节点与最右叶节点(交换首元素与尾元素)
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int tmp = nums[0];
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nums[0] = nums[i];
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nums[i] = tmp;
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@ -19,7 +19,7 @@ class QuickSort {
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/* 哨兵划分 */
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static int partition(int[] nums, int left, int right) {
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// 以 nums[left] 作为基准数
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// 以 nums[left] 为基准数
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int i = left, j = right;
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while (i < j) {
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while (i < j && nums[j] >= nums[left])
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@ -72,7 +72,7 @@ class QuickSortMedian {
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int med = medianThree(nums, left, (left + right) / 2, right);
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// 将中位数交换至数组最左端
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swap(nums, left, med);
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// 以 nums[left] 作为基准数
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// 以 nums[left] 为基准数
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int i = left, j = right;
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while (i < j) {
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while (i < j && nums[j] >= nums[left])
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@ -109,7 +109,7 @@ class QuickSortTailCall {
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/* 哨兵划分 */
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static int partition(int[] nums, int left, int right) {
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// 以 nums[left] 作为基准数
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// 以 nums[left] 为基准数
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int i = left, j = right;
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while (i < j) {
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while (i < j && nums[j] >= nums[left])
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@ -128,7 +128,7 @@ class QuickSortTailCall {
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while (left < right) {
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// 哨兵划分操作
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int pivot = partition(nums, left, right);
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// 对两个子数组中较短的那个执行快排
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// 对两个子数组中较短的那个执行快速排序
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if (pivot - left < right - pivot) {
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quickSort(nums, left, pivot - 1); // 递归排序左子数组
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left = pivot + 1; // 剩余未排序区间为 [pivot + 1, right]
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@ -17,7 +17,7 @@ public class radix_sort {
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/* 计数排序(根据 nums 第 k 位排序) */
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static void countingSortDigit(int[] nums, int exp) {
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// 十进制的位范围为 0~9 ,因此需要长度为 10 的桶
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// 十进制的位范围为 0~9 ,因此需要长度为 10 的桶数组
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int[] counter = new int[10];
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int n = nums.length;
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// 统计 0~9 各数字的出现次数
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