g0101_0200.s0191_number_of_1_bits.Solution Maven / Gradle / Ivy
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Java Solution for LeetCode algorithm problems, continually updating
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package g0101_0200.s0191_number_of_1_bits;
// #Easy #Top_Interview_Questions #Bit_Manipulation #Algorithm_I_Day_13_Bit_Manipulation
// #Programming_Skills_I_Day_2_Operator #Udemy_Bit_Manipulation
// #2022_06_28_Time_1_ms_(84.87%)_Space_41.8_MB_(10.40%)
public class Solution {
public int hammingWeight(int n) {
int sum = 0;
boolean flag = false;
if (n < 0) {
flag = true;
n = n - Integer.MIN_VALUE;
}
while (n > 0) {
int k = n % 2;
sum += k;
n /= 2;
}
return flag ? sum + 1 : sum;
}
}