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为什么在偶数次输入时总是会输出两次结果!?恳请指点.#include<stdio.h>
char a[5000];
short m[5000][5000];
int min(int a,int b)
{
int z;
z=a<b?a:b;
return z;
}
int main()
{
int n,i,j;
while(scanf("%d",&n)!=EOF)
{
for(i=0;i<n;i++)
for(j=0;j<n;j++)
m[i][j]=0;
for(i=0;i<n;i++)
scanf("%c",a+i);
for(i=n-1;i>=0;i--)
{
for(j=i+1;j<n;j++)
if(a[i]==a[j])m[i][j]=m[i+1][j-1];
else m[i][j]=1+min(m[i+1][j],m[i][j-1]);}
printf("%d\n",m[0][n-1]);
}
return 0;
}
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