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Create 25_positiveIntegersWithoutConsecutiveOnes.java #120

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23 changes: 23 additions & 0 deletions 07 July Leetcode Challenge 2021/25_positiveIntegersWithoutConsecutiveOnes.java
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Original file line number Diff line number Diff line change
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public class Solution {
public int findIntegers(int num) {
int[] f = new int[32];
f[0] = 1;
f[1] = 2;
for (int i = 2; i < f.length; i++)
f[i] = f[i - 1] + f[i - 2];
int i = 30, sum = 0, prev_bit = 0;
while (i >= 0) {
if ((num & (1 << i)) != 0) {
sum += f[i];
if (prev_bit == 1) {
sum--;
break;
}
prev_bit = 1;
} else
prev_bit = 0;
i--;
}
return sum + 1;
}
}