20210114

20210114/main.go

@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+func main() {
+
+}
+
+func readBinaryWatch(num int) []string {
+	var ret []string
+	for h := 0; h <= 12; h++ {
+		hCount := 0
+		s := fmt.Sprintf("%#b", h)
+		for _, c := range s {
+			if c == '1' {
+				hCount++
+			}
+		}
+		for m := 0; m <= 60; m++ {
+			mCount := 0
+			s := fmt.Sprintf("%#b", m)
+			for _, c := range s {
+				if c == '1' {
+					mCount++
+				}
+			}
+			if hCount+mCount == num {
+				if m > 10 {
+					ret = append(ret, fmt.Sprintf("%d:%d", h, m))
+				} else {
+					ret = append(ret, fmt.Sprintf("%d:0%d", h, m))
+				}
+			}
+		}
+	}
+	return ret
+}