Merge pull request #2122 from nirajvenkat/patch-11

Create 0078-subsets.rs

Author: tahsintunan

rust/0078-subsets.rs

@@ -0,0 +1,14 @@
+use std::iter::FromIterator;
+
+impl Solution {
+    pub fn subsets(nums: Vec<i32>) -> Vec<Vec<i32>> {
+        let n = nums.len();
+
+        Vec::from_iter((0..1 << n).map(|bitmask| {
+            Vec::from_iter((0..n).filter_map(|i| match (bitmask >> i) & 1 != 0 {
+                true => Some(nums[i]),
+                false => None
+            }))
+        }))
+    }
+}