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fix: use previous algorithm

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This commit is contained in:
David Leal 2023-07-26 18:40:34 +00:00
parent 4a3e7bbaec
commit 9bbb2fda81
1 changed files with 9 additions and 7 deletions
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16
greedy_algorithms/jump_game.cpp
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@ -40,12 +40,14 @@ namespace greedy_algorithms {
* @returns false if the index can NOT be reached
*/
template <typename T>
bool can_jump(const std::vector<T> &nums, const int &index = 1) {
const int size = nums.size() + 1 - nums[index];
if (nums[index] >= size) { // `>=` because the number can be higher than the size of the array.
return true;
bool can_jump(const std::vector<T> &nums) {
size_t lastPos = nums.size() - 1;
for (int i = nums.size() - 1; i >= 0; i--) {
if (i + nums[i] >= lastPos) {
lastPos = i;
}
}
return false;
return lastPos == 0;
}
} // namespace greedy_algorithms
@ -67,11 +69,11 @@ static void test() {
assert(greedy_algorithms::can_jump(nums) == true);
// 4th test
nums = { 4, 2, 8, 9, 6 };
nums = { 1, 0, 5, 8, 12 };
assert(greedy_algorithms::can_jump(nums) == false);
// 5th test
nums = { 7, 4, 8, 13, 2, 11 };
nums = {2, 1, 4, 7};
assert(greedy_algorithms::can_jump(nums) == true);
std::cout << "All tests have successfully passed!\n";