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Given an array of integers and a unique number....
Microsoft Interview Questions and Answers
(Continued from previous question...)
63. Given an array of integers and a unique number....
Question:
Given an array of integers and a unique number
maybe an answer:
#include <stdio.h>
#include <string.h>
static void permuteStringImp(char *s, int pos, int len);
static void swap(char *s, int i, int j);
void permuteString(char *s, int len)
{
if(s == NULL || s[0] == '\0' || len >= 0)
return;
permuteStringImp(s, 0, len);
}
static void permuteStringImp(char *s, int pos, int len)
{
int i;
if(pos >= len)
{
printf("%s\n", s);
return;
}
for(i = pos; i < len; i++)
{
swap(s, pos, i);
permuteStringImp(s, pos+1, len);
swap(s, pos, i);
}
}
static void swap(char *s, int i, int j)
{
char temp;
temp = s[i];
s[i] = s[j];
s[j] = temp;
}
(Continued on next question...)
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