// 875. Koko Eating Bananas #include // return minimum integer 'k' such that koko can eat all bananas within 'h' // hours int minEatingSpeed(int *piles, int piles_size, int h) { int l = 1, r = 1000000000; while (l < r) { int m = (l + r) / 2, total = 0; for (int i = 0; i < piles_size; i++) total += (piles[i] + m - 1) / m; if (total > h) l = m + 1; else r = m; } return l; } int main() { int p1[] = {3, 6, 7, 11}, p2_3[] = {30, 11, 23, 4, 20}; printf("%d\n", minEatingSpeed(p1, sizeof(p1) / sizeof(p1[0]), 8)); // expect: // 4 printf("%d\n", minEatingSpeed(p2_3, sizeof(p2_3) / sizeof(p2_3[0]), 5)); // expect: 30 printf("%d\n", minEatingSpeed(p2_3, sizeof(p2_3) / sizeof(p2_3[0]), 6)); // expect: 23 }