最后一个逗号,该怎么解决
最后一个逗号
帮忙写个函数,功能是实现 将一字符串中 逗号间 或 逗号后没有字符的补零,再保存到vector中。
例:a,,,b,
调用该函数后 输出为:a,0,0,b,0
要求用C++实现
void getStr(string str,char speCh,vector<string>&v)
{
int begin = 0;
for(int i=0;i<str.length();++i)
{
if(str[i]==speCh)
{
string temp = str.substr(begin,i-begin);
if(temp == "")
v.push_back("0");
else
v.push_back(temp);
begin=i+1;
}
}
}
这个函数只能读到最后一个逗号a,,,b。
逗号后面的b也不能保存到vector
------解决方案--------------------
用sprintf()解析
------解决方案--------------------
帮忙写个函数,功能是实现 将一字符串中 逗号间 或 逗号后没有字符的补零,再保存到vector中。
例:a,,,b,
调用该函数后 输出为:a,0,0,b,0
要求用C++实现
void getStr(string str,char speCh,vector<string>&v)
{
int begin = 0;
for(int i=0;i<str.length();++i)
{
if(str[i]==speCh)
{
string temp = str.substr(begin,i-begin);
if(temp == "")
v.push_back("0");
else
v.push_back(temp);
begin=i+1;
}
}
}
这个函数只能读到最后一个逗号a,,,b。
逗号后面的b也不能保存到vector
------解决方案--------------------
用sprintf()解析
------解决方案--------------------
- C/C++ code
if(str[i-1]==speCh)//这个判断条件改下就好了 v.push_back("0"); else v.push_back(temp);
------解决方案--------------------
很简单,用istringstream 配合函数getline,第三个参数用','
------解决方案--------------------
为什么不用我的试下呢?
------解决方案--------------------
直接用字符的阿斯卡马一个一个判断,然后存入vector.pushback()不就好了!?最后是,就加0
------解决方案--------------------
仅供参考
- C/C++ code
#include <stdio.h> #include <string.h> char string[80]; char seps1[3]; char seps2[3]; char *token; char *zzstrtok ( char *string, const char *control1,//连续出现时视为中间夹空token const char *control2 //连续出现时视为中间无空token ) { unsigned char *str; const unsigned char *ctrl1 = control1; const unsigned char *ctrl2 = control2; unsigned char map1[32],map2[32]; static char *nextoken; static char flag=0; unsigned char c; int L; memset(map1,0,32); memset(map2,0,32); do { map1[*ctrl1 >> 3] |= (1 << (*ctrl1 & 7)); } while (*ctrl1++); do { map2[*ctrl2 >> 3] |= (1 << (*ctrl2 & 7)); } while (*ctrl2++); if (string) { if (control2[0]) { L=strlen(string); while (1) { c=string[L-1]; if (map2[c >> 3] & (1 << (c & 7))) { L--; string[L]=0; } else break; } } if (control1[0]) { L=strlen(string); c=string[L-1]; if (map1[c >> 3] & (1 << (c & 7))) { string[L]=control1[0]; string[L+1]=0; } } str=string; } else str=nextoken; string=str; while (1) { if (0==flag) { if (!*str) break; if (map1[*str >> 3] & (1 << (*str & 7))) { *str=0; str++; break; } else if (map2[*str >> 3] & (1 << (*str & 7))) { string++; str++; } else { flag=1; str++; } } else if (1==flag) { if (!*str) break; if (map1[*str >> 3] & (1 << (*str & 7))) { *str=0; str++; flag=0; break; } else if (map2[*str >> 3] & (1 << (*str & 7))) { *str=0; str++; flag=2; break; } else str++; } else {//2==flag if (!*str) return NULL; if (map1[*str >> 3] & (1 << (*str & 7))) { str++; string=str; flag=0; } else if (map2[*str >> 3] & (1 << (*str & 7))) { str++; string=str; } else { string=str; str++; flag=1; } } } nextoken=str; if (string==str) return NULL; else return string; } void main() { strcpy(string,"A \tstring\t\tof ,,tokens\n\nand some more tokens, "); strcpy(seps1,",\n");strcpy(seps2," \t"); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"1234| LIYI|China | 010 |201110260000|OK"); strcpy(seps1,"|");strcpy(seps2," "); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"1234|LIYI||010|201110260000|OK"); strcpy(seps1,"");strcpy(seps2,"|"); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"1234|LIYI||010|201110260000|OK"); strcpy(seps1,"|");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"a"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"a,b"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"a,,b"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,",a"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,"a,"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,",a,,b"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,",,a,,b,,"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,","); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,",,"); strcpy(seps1,",");strcpy(seps2,""); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } strcpy(string,",,,"); strcpy(seps1,",");strcpy(seps2," "); printf("\n[%s]\nTokens:\n",string); token=zzstrtok(string,seps1,seps2); while (token!=NULL) { printf(" <%s>",token); token=zzstrtok(NULL,seps1,seps2); } } // //[A string of ,,tokens // //and some more tokens,] //Tokens: // <A>, <string>, <of>, <>, <tokens>, <>, <and>, <some>, <more>, <tokens>, <>, //[1234| LIYI|China | 010 |201110260000|OK] //Tokens: // <1234>, <LIYI>, <China>, <010>, <201110260000>, <OK>, //[1234|LIYI||010|201110260000|OK] //Tokens: // <1234>, <LIYI>, <010>, <201110260000>, <OK>, //[1234|LIYI||010|201110260000|OK] //Tokens: // <1234>, <LIYI>, <>, <010>, <201110260000>, <OK>, //[a] //Tokens: // <a>, //[a,b] //Tokens: // <a>, <b>, //[a,,b] //Tokens: // <a>, <>, <b>, //[,a] //Tokens: // <>, <a>, //[a,] //Tokens: // <a>, <>, //[,a,,b] //Tokens: // <>, <a>, <>, <b>, //[,,a,,b,,] //Tokens: // <>, <>, <a>, <>, <b>, <>, <>, //[,] //Tokens: // <>, <>, //[,,] //Tokens: // <>, <>, <>, //[,,,] //Tokens: // <>, <>, <>, <>,