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f013243
Added task 345
TristianMa de5e813
update task 345, add task 349
TristianMa 9ac2472
fix comments
TristianMa 4d19148
update solution for task 345 and 349
TristianMa 0ab5856
fix comment
ThanhNIT 2232855
format code
ThanhNIT 0324a03
Update Solution.java
ThanhNIT fb87b97
format code
ThanhNIT eef5bc5
Update Solution.java
ThanhNIT d8af2d4
Update Solution.java
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35 changes: 35 additions & 0 deletions
src/main/java/g0301_0400/s0345_reverse_vowels_of_a_string/Solution.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package g0301_0400.s0345_reverse_vowels_of_a_string; | ||
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| // #Easy #String #Two_Pointers | ||
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| public class Solution { | ||
| private boolean isVowel(char c) { | ||
| return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || c == 'A' || c == 'E' | ||
| || c == 'I' || c == 'O' || c == 'U'; | ||
| } | ||
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| private StringBuilder swap(StringBuilder s, int l, int r) { | ||
| char tmp = s.charAt(l); | ||
| s.setCharAt(l, s.charAt(r)); | ||
| s.setCharAt(r, tmp); | ||
| return s; | ||
| } | ||
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| public String reverseVowels(String s) { | ||
| int l = 0; | ||
| int r = s.length() - 1; | ||
| StringBuilder res = new StringBuilder(s); | ||
| while (l < r) { | ||
| while (l < r && !isVowel(s.charAt(l))) { | ||
| l++; | ||
| } | ||
| while (l < r && !isVowel(s.charAt(r))) { | ||
| r--; | ||
| } | ||
| swap(res, l, r); | ||
| l++; | ||
| r--; | ||
| } | ||
| return res.toString(); | ||
| } | ||
| } |
24 changes: 24 additions & 0 deletions
src/main/java/g0301_0400/s0345_reverse_vowels_of_a_string/readme.md
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| 345\. Reverse Vowels of a String | ||
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| Easy | ||
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| Given a string `s`, reverse only all the vowels in the string and return it. | ||
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| The vowels are `'a'`, `'e'`, `'i'`, `'o'`, and `'u'`, and they can appear in both cases. | ||
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| **Example 1:** | ||
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| **Input:** s = "hello" | ||
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| **Output:** "holle" | ||
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| **Example 2:** | ||
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| **Input:** s = "leetcode" | ||
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| **Output:** "leotcede" | ||
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| **Constraints:** | ||
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| * 1 <= s.length <= 3 * 105 | ||
| * `s` consist of **printable ASCII** characters. |
27 changes: 27 additions & 0 deletions
src/main/java/g0301_0400/s0349_intersection_of_two_arrays/Solution.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package g0301_0400.s0349_intersection_of_two_arrays; | ||
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| // #Easy #Array #Hash_Table #Sorting #Binary_Search #Two_Pointers | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| class Solution { | ||
| public int[] intersection(int[] nums1, int[] nums2) { | ||
| boolean[] occ = new boolean[1001]; | ||
| for (int i = 0; i < nums1.length; i++) { | ||
| occ[nums1[i]] = true; | ||
| } | ||
| List<Integer> res = new ArrayList<>(); | ||
| for (int i = 0; i < nums2.length; i++) { | ||
| if (occ[nums2[i]]) { | ||
| occ[nums2[i]] = false; | ||
| res.add(nums2[i]); | ||
| } | ||
| } | ||
| int[] result = new int[res.size()]; | ||
| for (int i = 0; i < res.size(); i++) { | ||
| result[i] = res.get(i); | ||
| } | ||
| return result; | ||
| } | ||
| } |
24 changes: 24 additions & 0 deletions
src/main/java/g0301_0400/s0349_intersection_of_two_arrays/readme.md
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| 349\. Intersection of Two Arrays | ||
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| Easy | ||
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| Given two integer arrays `nums1` and `nums2`, return _an array of their intersection_. Each element in the result must be **unique** and you may return the result in **any order**. | ||
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| **Example 1:** | ||
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| **Input:** nums1 = \[1,2,2,1\], nums2 = \[2,2\] | ||
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| **Output:** \[2\] | ||
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| **Example 2:** | ||
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| **Input:** nums1 = \[4,9,5\], nums2 = \[9,4,9,8,4\] | ||
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| **Output:** \[9,4\] | ||
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| **Explanation:** \[4,9\] is also accepted. | ||
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| **Constraints:** | ||
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| * `1 <= nums1.length, nums2.length <= 1000` | ||
| * `0 <= nums1[i], nums2[i] <= 1000` |
18 changes: 18 additions & 0 deletions
src/test/java/g0301_0400/s0345_reverse_vowels_of_a_string/SolutionTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| package g0301_0400.s0345_reverse_vowels_of_a_string; | ||
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| import static org.hamcrest.CoreMatchers.equalTo; | ||
| import static org.hamcrest.MatcherAssert.assertThat; | ||
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| import org.junit.jupiter.api.Test; | ||
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| class SolutionTest { | ||
| @Test | ||
| void reverseVowels() { | ||
| assertThat(new Solution().reverseVowels("hello"), equalTo("holle")); | ||
| } | ||
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| @Test | ||
| void reverseVowels2() { | ||
| assertThat(new Solution().reverseVowels("leetcode"), equalTo("leotcede")); | ||
| } | ||
| } |
22 changes: 22 additions & 0 deletions
src/test/java/g0301_0400/s0349_intersection_of_two_arrays/SolutionTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| package g0301_0400.s0349_intersection_of_two_arrays; | ||
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| import static org.hamcrest.CoreMatchers.equalTo; | ||
| import static org.hamcrest.MatcherAssert.assertThat; | ||
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| import org.junit.jupiter.api.Test; | ||
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| class SolutionTest { | ||
| @Test | ||
| void intersection() { | ||
| assertThat( | ||
| new Solution().intersection(new int[] {1, 2, 2, 1}, new int[] {2, 2}), | ||
| equalTo(new int[] {2})); | ||
| } | ||
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| @Test | ||
| void intersection2() { | ||
| assertThat( | ||
| new Solution().intersection(new int[] {4, 9, 5}, new int[] {9, 4, 9, 8, 4}), | ||
| equalTo(new int[] {9, 4})); | ||
| } | ||
| } |
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