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Diffstat (limited to 'redistribute_char_str_eq.c')
-rw-r--r-- | redistribute_char_str_eq.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/redistribute_char_str_eq.c b/redistribute_char_str_eq.c new file mode 100644 index 0000000..d81114a --- /dev/null +++ b/redistribute_char_str_eq.c @@ -0,0 +1,29 @@ +// 1897. Redistribute Characters to Make All Strings Equal +#include "leetcode.h" + +/* + * given an array of strings 'words' in one operation, pick two distinct indices + * 'i' and 'j' where 'words[i]' is a non empty string and ove any character from + * words[i] to any position in 'words[j]'. return 1 if you can make every string + * in 'words' equal using any number of operations, and 0 otherwise. + */ + +bool makeEqual(char **words, int words_size) { + int n = words_size; + int *alpha = calloc(26, sizeof(int)); + for (int i = 0; i < n; i++) { + int l = strlen(words[i]); + for (int j = 0; j < l; j++) + alpha[words[i][j] - 'a']++; + } + for (int i = 0; i < 26; i++) + if (alpha[i] % n) + return false; + return true; +} + +int main() { + char **w1 = {"abc", "aabc", "bc"}, **w2 = {"ab", "a"}; + printf("%d\n", makeEqual(w1, ARRAY_SIZE(w1))); // expect: 1 + printf("%d\n", makeEqual(w2, ARRAY_SIZE(w2))); // expect: 0 +} |