-
-
Notifications
You must be signed in to change notification settings - Fork 299
/
190.java
31 lines (31 loc) · 1.08 KB
/
190.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
__________________________________________________________________________________________________
sample 1 ms submission
public class Solution {
// you need treat n as an unsigned value
public int reverseBits(int n) {
int result = 0;
for (int i = 0; i < 32; i++) {
result += n & 1;
// In Java: ">>>" to perform logical right shifts
n >>>= 1; // CATCH: must do unsigned shift
if (i < 31) // CATCH: for last digit, don't shift!
// logical and arithmetic left-shift operations are identical, there is no "<<<" operator in Java
result <<= 1;
}
return result;
}
}
__________________________________________________________________________________________________
sample 27552 kb submission
public class Solution {
// you need treat n as an unsigned value
public int reverseBits(int n) {
int rev=0;
for(int i=0;i<32;i++){
rev= rev<<1 | n&1;
n=n>>>1;
}
return rev;
}
}
__________________________________________________________________________________________________