Time Complexity: O(1). 共有4^4种组合. Space: O(1). size为4的HashSet. AC Java: 1classSolution {2publicString nextClosestTime(String time) {3Set<Integer> hs =newHashSet<>();4for(inti = 0; i<time.length(); i++){5charc =time.charAt(i);6if(c != ':'){7hs.add(c-'0'...
Time Complexity: O(1). 共有4^4种组合. Space: O(1). size为4的HashSet. AC Java: 1 class Solution { 2 public String nextClosestTime(String time) { 3 Set<Integer> hs = new HashSet<>(); 4 for(int i = 0; i<time.length(); i++){ 5 char c = time.charAt(i); 6 if(c !
big-math - parsing of BigInt and BigDecimal values with the O(n^1.5) complexity instead of O(n^2) using Java's implementations where n is a number of digits James Anhalt's algorithm - the ingenious algorithm for printing integers into decimal stringsA...