从C/C++转到Java的程序员，一开始最不习惯的就是变量命名方式的改变。C语言风格使用下划线分隔多个单词，例如“hello_world”；而Java则采用一种叫骆驼命名法的规则：除首个单词以外，所有单词的首字母大写，例如“helloWorld”。
请你帮可怜的程序员们自动转换变量名。
[编程题]骆驼命名法
#include<iostream>
#include<vector>
#include<string>
#include<algorithm>
#include<functional>
#include <map>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <exception>
#include <iomanip>
#include <memory>
#include <sstream>
#define INF 1000000
using namespace std;
int main(int argc, char** argv)
{
//freopen("in.txt", "r", stdin);
string s;
while (cin >> s)
{
for (int i = 0; i < s.size(); ++i)
{
if (s[i] == '_') continue;
if (i > 0 && s[i - 1] == '_') cout << (char)toupper(s[i]);
else cout << s[i];
}
cout << endl;
}
return 0;
}
发表于 2017-07-12 13:21:22
回复(1)
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner scanner=new Scanner(System.in);
while(scanner.hasNext()){
String str=scanner.nextLine();
String[] words=str.split("_");
String result=words[0];
for(int i=1;i<words.length;i++){
result+=(char)(words[i].charAt(0)-'a'+'A');
for(int j=1;j<words[i].length();j++){
result+=words[i].charAt(j);
}
}
System.out.println(result);
}
}
}
发表于 2018-09-20 23:38:52
回复(0)
//为什么过不去
#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
string solv(string s){
string r="";
for(int i=0;i<s.size();i++){
if(s[i]=='_' && i!='0'){
continue;
}
else if(i>1&& s[i-1]=='_'&&s[i]>='a'&&s[i]<='z'){
r+='A'+s[i]-'a';
}
else{
r+=s[i];
}
}
return r;
}
发表于 2023-08-29 16:35:47
回复(0)
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
while(in.hasNextLine()){
String result = "";
String str = in.nextLine();
for(int i = 0;i < str.length();i++){
char a = str.charAt(i);
if(a == '_'){
i++;
char b = (char)(str.charAt(i) - 32);
result += b;
}else{
result += a;
}
}
System.out.println(result);
}
}
}
发表于 2022-07-06 10:35:26
回复(0)
import java.util.*;
public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
String s = sc.nextLine();
char[] ch = s.toCharArray();
int len = ch.length;
for(int i = 0;i < len;i++){
if(ch[i] == '_'){
continue;
}else if(i > 0 && ch[i - 1] == '_'){
//将小写转换为大写
System.out.print((char)(ch[i] - 32));
}else{
System.out.print(ch[i]);
}
}
System.out.println();
}
}
}
编辑于 2022-06-09 16:27:55
回复(0)
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
String str = sc.nextLine();
StringBuilder sb = new StringBuilder();
for(int i = 0; i < str.length(); i++){
if(str.charAt(i) == '_'){
sb.append(str.substring(++i, i+1).toUpperCase());
}
else{
sb.append(str.charAt(i));
}
}
System.out.println(sb);
}
}
}
发表于 2021-08-03 09:20:51
回复(0)
1、解题思路
遍历一遍，如果是下划线下一次就减32，不是下划线就不变，大写小写之间相差32
2、代码展示
#include<iostream>
#include<string>
using namespace std;
int main()
{
string str;
while(cin>>str)
{
string ret;
for(int i=0;i<str.size();++i)
{
if(str[i] == '_')
str[i+1] -= 32;
else
ret += str[i];
}
cout<<ret<<endl;
}
}
发表于 2021-06-16 19:30:54
回复(0)
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
while (sc.hasNext()){
String s=sc.nextLine();
getName(s);
}
}
private static void getName(String s) {
char[] c=s.toCharArray();
StringBuilder sb=new StringBuilder();
for (int i = 0; i <c.length ; i++) {
if (c[i]=='_'){
sb.append(Character.toUpperCase(c[i+1]));
i++;
}else {
sb.append(c[i]);
}
}
System.out.println(sb.toString());
}
}
发表于 2021-03-18 20:23:08
回复(0)
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
String str = sc.nextLine();
change(str);
}
private static void change(String str) {
StringBuilder ret = new StringBuilder();
for (int i = 0; i < str.length(); i++) {
boolean flg=false;
while(str.charAt(i)=='_'){
i++;
flg=true;
}
if(flg){
ret.append((char)(str.charAt(i)-32));
continue;
}
ret.append(str.charAt(i));
}
System.out.println(ret.toString());
}
}
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
String str = sc.nextLine();
change(str);
}
}
StringBuilder ret = new StringBuilder();
for (int i = 0; i < str.length(); i++) {
boolean flg=false;
while(str.charAt(i)=='_'){
i++;
flg=true;
}
if(flg){
ret.append((char)(str.charAt(i)-32));
continue;
}
ret.append(str.charAt(i));
}
System.out.println(ret.toString());
}
}
发表于 2020-05-03 08:40:50
回复(0)
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
while(in.hasNext()){
String str = in.next();
char[] array = str.toCharArray();
int i = 0;
StringBuilder sb = new StringBuilder();
while(i < array.length){
if(array[i] != '_'){
sb.append(array[i]);
i++;
} else {
i++;
sb.append((array[i]+"").toUpperCase());
i++;
}
}
System.out.println(sb.toString());
}
}
}
public class Main{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
while(in.hasNext()){
String str = in.next();
char[] array = str.toCharArray();
int i = 0;
StringBuilder sb = new StringBuilder();
while(i < array.length){
if(array[i] != '_'){
sb.append(array[i]);
i++;
} else {
i++;
sb.append((array[i]+"").toUpperCase());
i++;
}
}
System.out.println(sb.toString());
}
}
}
编辑于 2020-04-21 17:25:04
回复(0)
// write your code here cpp
#include<cstdio>
(802)#include<cstring>
#include<cctype>
char str[110];
int main(){
while(scanf("%s",str)!=EOF){
int k=0;
for(int i=0;i<strlen(str);++i){
if(str[i]=='_'){
str[i+1]=toupper(str[i+1]);
continue;
}
str[k++]=str[i];
}
str[k]='\0';
printf("%s\n",str);
}
return 0;
}
发表于 2020-04-08 22:54:01
回复(0)
import java.util.Scanner; public class Main{ public static void main(String[] args) { Scanner in = new Scanner(System.in); while (in.hasNext()) { StringBuilder sb = new StringBuilder(in.nextLine()); for(int i=0; i<sb.length(); i++){ if(sb.charAt(i) == '_'){ sb.replace(i,i+2,(sb.charAt(i+1)+"").toUpperCase()); } } System.out.println(sb.toString()); } } }
编辑于 2019-07-25 11:28:04
回复(0)
#include <string>
#include <iostream>
using namespace std;
int main()
{
string str;
while(getline(cin,str))
{
for(int i = 0;i < str.size();i++)
{
if(str[i]=='_')
{
str.erase(str.begin()+i);
str[i] = str[i]-32;
}
}
for(int j = 0;j<str.size();j++)
{
cout<<str[j];
}
cout<<endl;
}
return 0;
}
#include <iostream>
using namespace std;
int main()
{
string str;
while(getline(cin,str))
{
for(int i = 0;i < str.size();i++)
{
if(str[i]=='_')
{
str.erase(str.begin()+i);
str[i] = str[i]-32;
}
}
for(int j = 0;j<str.size();j++)
{
cout<<str[j];
}
cout<<endl;
}
return 0;
}
发表于 2019-07-22 14:16:22
回复(0)
// write your code here
import java.util.*;
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner in=new Scanner(System.in);
while(in.hasNext()){
String str=in.next();
StringBuilder br=new StringBuilder();
for(int i=0;i<str.length();i++){
if(str.charAt(i)=='_' && i!=str.length()-1){
i++;
char ch=(char)(str.charAt(i)-32);
br.append(ch);
}
else{
br.append(str.charAt(i));
}
}
System.out.println(br.toString());
}
}
}
public static void main(String[] args){
Scanner in=new Scanner(System.in);
while(in.hasNext()){
String str=in.next();
StringBuilder br=new StringBuilder();
for(int i=0;i<str.length();i++){
if(str.charAt(i)=='_' && i!=str.length()-1){
i++;
char ch=(char)(str.charAt(i)-32);
br.append(ch);
}
else{
br.append(str.charAt(i));
}
}
System.out.println(br.toString());
}
}
}
发表于 2019-05-12 14:16:13
回复(0)
#include<iostream>
#include<string>
#include<string>
using namespace std;
int main()
{
string c;
int flage;
while (getline(cin,c))
{
flage = 0;
for (int i = 0; i < c.size(); i++)
{
if (c[i] == '_')
{
c.erase(c.begin()+i);
flage = 1;
i--;
}
else if (flage == 1)
{
c[i] = toupper(c[i]);
cout << c[i];
flage = 0;
}
else
{
cout << c[i];
}
}
cout << endl;
}
return 0;
}
发表于 2018-02-21 14:16:21
回复(0)
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