soho95的专栏

class Solution { public boolean isPalindrome(int x) { if(x<0) return false; int head=0; int tmp=x; while(tmp!=0) { head =head*10+tmp%10; tmp/=10; } r.

char 的c是小写，全都是写语法问题，搞半天，要哭了。还有就是if的嵌套少写了一层，无语。class Solution { public boolean isA(char x){ if(((x>='a')&&(x<='z'))||((x>='A')&&(x<='Z'))){ // if(Character.isLowerCase(x)||Character.isUpperCase(x)) {

class Solution { public int numSub(String s) { String[] sub=s.split("0"); long total=0; long a=0; for(int i=0;i<sub.length;i++){ a=(long)sub[i].length(); total=total+a*(a+1)/2; } return (i.

//string 变char[]char[] chars= s.toCharArray();//char[] 变stringnew String(chars);//char 字符赋值-char首字母小写char rep='a';//rep变成brep=(char)(rep+1);

class Solution { public String modifyString(String s) { char[] s2chars= s.toCharArray(); for(int i=0;i<s2chars.length;i++){ if(s2chars[i]=='?'){ char pre=' '; char next=' ';.