31 Bit Manipulation

参考9 Bit Manipulation

461 Hamming Distance

477 Total Hamming Distance

136 Single Number （L82）

137 Single Number II （L83）

260 Single Number III （L84）

191 Number of 1 bits

231 Power of Two

1437 Check If All 1's Are at Least Length K Places Away -- follow up部分

1329 Sort the Matrix Diagonally -- 解法3，用了bit map，可以记住这种用法

1680 Concatenation of Consecutive Binary Numbers -- 解法二，通过位运算减低空间时间复杂度

1342 Number of Steps to Reduce a Number to Zero

1310 XOR Queries of a Subarray -- 套着xor皮的prefix sum

751 IP to CIDR

other related:

L824 Single Number IV