Map (Java) - ShuweiLeung/Thinking GitHub Wiki

1.（846:Medium）（非常经典题）Hand of Straights

• Intuition:

1. Count number of different cards to a map c
2. Loop from the smallest card number.
3. Everytime we meet a new card i, we cut off i 到 i + W - 1 from the counter，将i到i+W-1值的所有数字频率都减数字i的个数，这样比一个一个减效率要高