085-1 in C++ by ash

1 files changed, 40 insertions, 0 deletions

diff --git a/challenge-085/ash/cpp/ch-1.cpp b/challenge-085/ash/cpp/ch-1.cpp
new file mode 100644
index 0000000000..a3f533c450
--- /dev/null
+++ b/challenge-085/ash/cpp/ch-1.cpp
@@ -0,0 +1,40 @@
+/*
+    Task 1 from
+    https://perlweeklychallenge.org/blog/perl-weekly-challenge-085/#TASK1
+
+    $ g++ -std=c++17 ch-1.cpp
+    $ ./a.out 
+    1
+*/
+
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int main() {
+    vector<double> r = {1.2, 0.4, 0.1, 2.5};
+    // vector<double> r = {0.2, 1.5, 0.9, 1.1};
+
+    bool found = false;
+    for (unsigned int c = 0; c != 2 << (r.size() - 1); c++) {
+        unsigned int mask = c;
+        unsigned int unit_bits = 0;
+        double sum = 0;
+        for (unsigned int bitpos = r.size(); bitpos; bitpos--) {
+            unsigned int current_bit = mask & 1;
+            unit_bits += current_bit;
+            mask >>= 1;
+
+            if (current_bit) sum += r[bitpos - 1];
+        }
+
+        if (unit_bits == 3 && sum > 1 && sum < 2) {
+            cout << 1 << endl;
+            found = true;
+            break;
+        }
+    }
+
+    if (!found) cout << 0 << endl;
+}