【漫步刷题路】- 逆序字符串II

#include<stdio.h>
#include<assert.h>
#include<string.h>
//区间逆置
void reverse(char* left, char* right)
{
  assert(left && right);
  while (left < right)
  {
    char str = *right;
    *right = *left;
    *left = str;
    right--;
    left++;
  }
}
int main()
{
  char str[100] = "Chase the wisdom 99";
  int len = strlen(str);
  //1.先整体逆置
  reverse(str, str + len - 1);
  //2.分别逆置，以空格为分隔 
  char* end = str;
  char* start = str;
    //循环判断条件：end指向的字符不是\0
  while (*end != '\0')
  {
        //当end没有遇到\0 和空格就继续
    while ( (*end != '\0')  && (*end != ' '))
    {
      end++;
    }
        //当end跳出循环时，指向的就是空格或者\0  逆置[start,end-1]的内容
    reverse(start, end-1);
        //end向后移动，进行下一次循环
        //start从end位置开始，重新定义起始区间
        end++;
    start = end;
  }
  printf(str);
  return 0;
}