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1009.java
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1009.java
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sample 0 ms submission
class Solution {
public int bitwiseComplement(int N) {
int X = 1;
while (N > X){
X = X * 2 + 1;
}
return X - N;
}
}
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sample 31672 kb submission
class Solution {
public int bitwiseComplement(int N) {
if(N==0) return 1;
int r = 0;
int f = 1;
while(N!=0){
if((N&1)==0){
r = r + f;
}
f=f<<1;
N>>=1;
}
return r;
}
}
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