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author | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
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committer | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
commit | 7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch) | |
tree | eb7a24ee2067f92245c57bb118e85a1baf15df50 /other/concatenation_binary_num.cpp | |
parent | 5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff) | |
download | leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip |
chore: move cpp and rust code to directory
Diffstat (limited to 'other/concatenation_binary_num.cpp')
-rw-r--r-- | other/concatenation_binary_num.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/other/concatenation_binary_num.cpp b/other/concatenation_binary_num.cpp new file mode 100644 index 0000000..b212c09 --- /dev/null +++ b/other/concatenation_binary_num.cpp @@ -0,0 +1,38 @@ +#include "leetcode.h" + +class Solution { +public: + int concatenatedBinary(int n) { + string s = decimalToBinary(n); + return binaryToDecimal(s); + } + +private: + int mod = 1000000007; + string decimalToBinary(int n) { + string str = ""; + for (int i = n; i >= 1; --i) { + int j = i; + while (j) { + str += (j % 2) + '0'; + j /= 2; + } + } + return str; + } + int binaryToDecimal(string n) { + long long ans = 0, p = 1; + for (int i = 0; i < n.size(); ++i) { + long long curr = (n[i] - '0') * p; + p *= 2; + p %= mod; + ans += curr; + } + return ans % mod; + } +}; + +int main() { + Solution obj; + cout << obj.concatenatedBinary(3); +} |