update 33 java

yennanliu · Nov 26, 2024 · a526911 · a526911
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diff --git a/data/progress.md b/data/progress.md
@@ -1,5 +1,8 @@
 # Progress
 
+# 2024-11-25
+- https://github.com/yennanliu/CS_basics/blob/master/doc/Leetcode_company_frequency-master/Google%206months-%20LeetCode.pdf
+
 # 2024-11-23
 - https://github.com/yennanliu/CS_basics/blob/master/doc/Leetcode_company_frequency-master/Google%206months-%20LeetCode.pdf
 

diff --git a/data/progress.txt b/data/progress.txt
@@ -1,7 +1,8 @@
+20241125: 33
 20241124: 153
 20241123: 253
 20241122: 776,31
-20241121: 004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)
+20241121: 004(todo),81(todo),34(todo),162(todo),275(todo)
 20241120: 986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)
 20241117: 394
 20241116: 833,950

diff --git a/data/to_review.txt b/data/to_review.txt
@@ -1,6 +1,6 @@
 2025-01-17 -> ['253']
 2025-01-16 -> ['776,31']
-2025-01-15 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)']
+2025-01-15 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)']
 2025-01-14 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)']
 2025-01-11 -> ['394']
 2025-01-10 -> ['833,950']
@@ -10,31 +10,31 @@
 2024-12-28 -> ['900']
 2024-12-27 -> ['253', '26,27', '802,1197,26']
 2024-12-26 -> ['776,31']
-2024-12-25 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)']
+2024-12-25 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)']
 2024-12-24 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)']
 2024-12-21 -> ['394', '855,846']
 2024-12-20 -> ['833,950', '932']
 2024-12-18 -> ['951,792']
 2024-12-14 -> ['253', '53,210,207', '163,1048']
 2024-12-13 -> ['776,31', '444', '298,729']
-2024-12-12 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '1188,130,855(again)', '1146']
+2024-12-12 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)', '1188,130,855(again)', '1146']
 2024-12-11 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)']
 2024-12-08 -> ['394', '737']
 2024-12-07 -> ['833,950', '900', '686,734,737']
 2024-12-06 -> ['253', '26,27', '802,1197,26', '353']
 2024-12-05 -> ['776,31', '528,334']
-2024-12-04 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)']
+2024-12-04 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)']
 2024-12-03 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '1145']
 2024-12-01 -> ['253', '53,210,207']
 2024-11-30 -> ['776,31', '394', '444', '855,846', '1145,1219']
-2024-11-29 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '833,950', '1188,130,855(again)', '932']
+2024-11-29 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)', '833,950', '1188,130,855(again)', '932']
 2024-11-28 -> ['253', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)']
 2024-11-27 -> ['776,31', '951,792', '524,221,889']
-2024-11-26 -> ['253', '004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '743,889']
+2024-11-26 -> ['253', '004(todo),81(todo),34(todo),162(todo),275(todo)', '743,889']
 2024-11-25 -> ['253', '776,31', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '394', '837']
-2024-11-24 -> ['253', '776,31', '004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '833,950', '900']
-2024-11-23 -> ['776,31', '004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '53,210,207', '26,27', '802,1197,26', '163,1048', '981']
-2024-11-22 -> ['004(todo),153(todo),33(todo),81(todo),34(todo),162(todo),275(todo)', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '394', '444', '298,729', '1087']
+2024-11-24 -> ['253', '776,31', '004(todo),81(todo),34(todo),162(todo),275(todo)', '833,950', '900']
+2024-11-23 -> ['776,31', '004(todo),81(todo),34(todo),162(todo),275(todo)', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '53,210,207', '26,27', '802,1197,26', '163,1048', '981']
+2024-11-22 -> ['004(todo),81(todo),34(todo),162(todo),275(todo)', '986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '394', '444', '298,729', '1087']
 2024-11-21 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)', '833,950', '1188,130,855(again)', '1146']
 2024-11-20 -> ['394', '939']
 2024-11-19 -> ['394', '833,950']

diff --git a/leetcode_java/src/main/java/LeetCodeJava/BinarySearch/SearchInRotatedSortedArray.java b/leetcode_java/src/main/java/LeetCodeJava/BinarySearch/SearchInRotatedSortedArray.java
@@ -1,7 +1,45 @@
 package LeetCodeJava.BinarySearch;
 
 // https://leetcode.com/problems/search-in-rotated-sorted-array/
-
+/**
+ * 33. Search in Rotated Sorted Array
+ * Solved
+ * Medium
+ * Topics
+ * Companies
+ * There is an integer array nums sorted in ascending order (with distinct values).
+ *
+ * Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1 <= k < nums.length) such that the resulting array is [nums[k], nums[k+1], ..., nums[n-1], nums[0], nums[1], ..., nums[k-1]] (0-indexed). For example, [0,1,2,4,5,6,7] might be rotated at pivot index 3 and become [4,5,6,7,0,1,2].
+ *
+ * Given the array nums after the possible rotation and an integer target, return the index of target if it is in nums, or -1 if it is not in nums.
+ *
+ * You must write an algorithm with O(log n) runtime complexity.
+ *
+ *
+ *
+ * Example 1:
+ *
+ * Input: nums = [4,5,6,7,0,1,2], target = 0
+ * Output: 4
+ * Example 2:
+ *
+ * Input: nums = [4,5,6,7,0,1,2], target = 3
+ * Output: -1
+ * Example 3:
+ *
+ * Input: nums = [1], target = 0
+ * Output: -1
+ *
+ *
+ * Constraints:
+ *
+ * 1 <= nums.length <= 5000
+ * -104 <= nums[i] <= 104
+ * All values of nums are unique.
+ * nums is an ascending array that is possibly rotated.
+ * -104 <= target <= 104
+ *
+ */
 public class SearchInRotatedSortedArray {
 
     // V0
@@ -54,6 +92,7 @@ public int search(int[] nums, int target) {
             // Case 1: subarray on mid's left is sorted
             /** NOTE !!! we compare mid with left, instead of 0 idx element */
             else if (nums[mid] >= nums[l]) {
+                /** NOTE !!!  ">=" */
                 if (target >= nums[l] && target < nums[mid]) {
                     r = mid - 1;
                 } else {
@@ -63,6 +102,7 @@ else if (nums[mid] >= nums[l]) {
 
             // Case 2: subarray on mid's right is sorted
             else {
+                /** NOTE !!!  "<=" */
                 if (target <= nums[r] && target > nums[mid]) {
                     l = mid + 1;
                 } else {
@@ -76,8 +116,55 @@ else if (nums[mid] >= nums[l]) {
     }
 
     // V0'
+    // IDEA : BINARY SEARCH
+    // CASE 1) sub array left is sorted
+    // CASE 2) sub array right is sorted
+    public int search_0_1(int[] nums, int target) {
+        if (nums.length == 1){
+            return nums[0] == target ? 0 : -1;
+        }
+
+        // binary search
+        int left = 0;
+        int right = nums.length - 1;
+        while (right >= left){
+            int mid = (left + right) / 2;
+            //System.out.println(">>> left = " + left + ", right = " + right + ", mid = " + mid);
+            if (nums[mid] == target){
+                return mid;
+            }
+            // right sub array is ascending
+            if (nums[mid] < nums[right]){
+                // case 1-1)  mid < target < right
+                /** NOTE !!!  "<="  with right boundary */
+                if (target <= nums[right] && target > nums[mid]){
+                    left = mid + 1;
+                }
+                // case 1-2) target > mid
+                else{
+                    right = mid - 1;
+                }
+            }
+            // case 2) left sub array is ascending
+            else{
+                // case 2-1) mid > target > left
+                /** NOTE !!!  "<="  with left boundary */
+                if (nums[left] <= target && target < nums[mid]){
+                    right = mid - 1;
+                }
+                // case 2-1) target > mid
+                else{
+                    left = mid + 1;
+                }
+            }
+        }
+
+        return -1;
+    }
+
+    // V0''
     // IDEA : BINARY SEARCH (fixed by GPT)
-    public int search_0(int[] nums, int target) {
+    public int search_0_2(int[] nums, int target) {
 
         if (nums.length == 0){
             return -1;

diff --git a/leetcode_java/src/main/java/dev/workspace5.java b/leetcode_java/src/main/java/dev/workspace5.java
@@ -3792,6 +3792,49 @@ public int findMin(int[] nums){
 //        return nums[left];
 //    }
 
+    // LC 33
+    // 7.42 pm - 8.10 pm
+    public int search(int[] nums, int target) {
+        if (nums.length == 1){
+            return nums[0] == target ? 0 : -1;
+        }
+
+        // binary search
+        int left = 0;
+        int right = nums.length - 1;
+        while (right >= left){
+            int mid = (left + right) / 2;
+            System.out.println(">>> left = " + left + ", right = " + right + ", mid = " + mid);
+            if (nums[mid] == target){
+                return mid;
+            }
+            // right sub array is ascending
+            if (nums[mid] < nums[right]){
+                // case 1-1)  mid < target < right
+                if (target <= nums[right] && target > nums[mid]){
+                    left = mid + 1;
+                }
+                // case 1-2) target > mid
+                else{
+                    right = mid - 1;
+                }
+            }
+            // case 2) left sub array is ascending
+            else{
+                // case 2-1) mid > target > left
+                if (nums[left] <= target && target < nums[mid]){
+                    right = mid - 1;
+                }
+                // case 2-1) target > mid
+                else{
+                    left = mid + 1;
+                }
+            }
+        }
+
+        return -1;
+    }
+
 }