I am trying to solve this Problem.The question is as follows
Given an input string and a dictionary of words, find out if the input string can be segmented into a space-
Is recursion mandatory? I see, iterative DP-solution is easiest and compact:
#include
#include
int main() {
const char *D[] = { "i", "like", "sam", "sung", "samsung", "mobile", "ice", "cream", "icecream", "man", "go", "mango", NULL};
const char q[] = "samsungmango";
char dp[100];
short d_len[20];
memset(dp, 0, sizeof(dp));
dp[0] = 1; // 0 element is always reacheable
int i, j;
// compute dict string lengths
for(i = 0; D[i]; i++)
d_len[i] = strlen(D[i]);
// Compute splits using DP array
for(i = 0; q[i] != 0; i++)
if(dp[i]) // this index is reacheable
for(j = 0; D[j]; j++) // try to make next reacheable indexes
if(strncmp(&q[i], D[j], d_len[j]) == 0)
dp[i + d_len[j]] = 1; // That position is reacheable, too
// if EOLN(q) is reached, then yes
printf("Answer is %s\n", dp[i]? "YES" : "NO");
} // main