How do you remove consecutive spaces in a simple editor like notepad in Microsoft Windows? One way is to repeatedly "replace all" two consecutive spaces with one space (we call it an action). In this problem, you're to simulate this process and report the number of such "replace all" actions.
For example, if you want to remove consecutive spaces in "A very big joke.", you need two actions:
"A very big joke." -> "A very big joke." -> "A very big joke."A very big joke. Goodbye!
2 4
A*very**big****joke. *********Goodbye!
Rujia Liu's Present 5: Developing Simplified Softwares
Special Thanks: Youzhi Bao
题意是给出的字符串有若干连续的空格,每次将每个连续空格中的空格两两合并,要多少步才能使得每个区间只有一个空格,我们先找出区间最长的空格数,由于奇数必须会有多于的一个,于是我们可以将奇数看做偶数处理
#include <stdio.h> #include <string.h> #include <algorithm> using namespace std; char str[1024*1024+5];//1M int main() { int len,i; int maxn,space,ans; while(gets(str)) { len = strlen(str); maxn = 0; space = 0; for(i = 0;i<len;i++) { if(str[i] == ' ') space++;//连续空格 else { if(maxn<space)//找出最长的连续空格 maxn = space; space = 0; } } ans = 0; while(maxn!=1) { if(maxn%2)//奇数多出一个,可以将多出的也看成是两个空格合并的过程 maxn++; maxn/=2; ans++; } printf("%d\n",ans); } return 0; }