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Diffstat (limited to 'find_frequent_vowel_consonant.c')
-rw-r--r-- | find_frequent_vowel_consonant.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/find_frequent_vowel_consonant.c b/find_frequent_vowel_consonant.c new file mode 100644 index 0000000..19f18b1 --- /dev/null +++ b/find_frequent_vowel_consonant.c @@ -0,0 +1,33 @@ +// 3541. Find Most Frequent Vowel and Consonant +#include "leetcode.h" + +/* + * you are given a string 's' consisting of lowercase english letters 'a' to + * 'z'. your task is to find the vowel with the maximum frequency, and find the + * consonant with the maximum frequency. return the sum of the two frequencies. + * note if multiple vowels or consonants have the same maximum frequency, you + * may choose any one of them. if there are no vowels or consonants in the + * string, consider their frequency as 0. + */ + +int maxFreqSum(char *s) { + int freq[26] = {0}, n = strlen(s); + for (int i = 0; i < n; i++) + freq[s[i] - 'a']++; + static const int mask = 1 + (1 << ('e' - 'a')) + (1 << ('i' - 'a')) + + (1 << ('o' - 'a')) + (1 << ('u' - 'a')); + int max_v = 0, max_c = 0; + for (int i = 0; i < 26; i++) { + if (((1 << i) & mask)) + max_v = fmax(max_v, freq[i]); + else + max_c = fmax(max_c, freq[i]); + } + return max_v + max_c; +} + +int main() { + char *s1 = "successes", *s2 = "aeiaeia"; + printf("%d\n", maxFreqSum(s1)); // expect: 6 + printf("%d\n", maxFreqSum(s2)); // expect: 3 +} |