feat : number-of-1-bits

Author: ekgns33

number-of-1-bits/ekgns33.java

@@ -0,0 +1,19 @@
+class Solution {
+  public int hammingWeight(int n) {
+    int curN = n;
+    int cnt = 0;
+    while(curN > 0) {
+      if(curN %2 == 1) {
+        cnt++;
+      }
+      curN /= 2;
+    }
+    return cnt;
+  }
+}
+/**
+
+ 1 2 3 4 5 6 7 8 9 10 11
+ 0 1 2 1 2 2 3 1 2  2  3
+
+ */