Renoler的博客

Problems: https://leetcode.com/problems/reverse-words-in-a-string/Solution:class Solution { public String reverseWords(String s) { if (s == null || s.length() == 0) { return ...

Problems https://leetcode.com/problems/reverse-string/Solution:class Solution { public void reverseString(char[] s) { int i = 0; int j = s.length -1; while (i < j) { ...

Problem: https://leetcode.com/problems/ransom-note/Solution:class Solution { public boolean canConstruct(String ransomNote, String magazine) { HashMap<Character, Integer> count = n...

Problem: https://leetcode.com/problems/reverse-vowels-of-a-string/Solution:class Solution { public String reverseVowels(String s) { int i = 0; int j = s.length() - 1; cha...

Problems: https://leetcode.com/problems/isomorphic-strings/Solution1:粗糙：class Solution { public boolean isIsomorphic(String s, String t) { if (s.length() != t.length()) { re...

Problems:https://leetcode.com/problems/valid-palindrome/Solution:class Solution { public boolean isPalindrome(String s) { // 将字符小写化 String ls = s.toLowerCase(); // 删除不是数字/字...

Problems: https://leetcode.com/problems/valid-palindrome-ii/Solution:若不回文s [ i : j ]，比较s [ i+1 : j ]和s [ i : j+1 ]class Solution { public boolean isPalindrome(String s) { for (int i = 0...