2 files changed, 57 insertions, 0 deletions
diff --git a/notes.md b/notes.md
index 3b94338..d92f8ed 100644
--- a/notes.md
+++ b/notes.md
@@ -201,3 +201,21 @@ same machine?
     14,19600,16384
     15,22500,32768
     ```
+
+Problem 1-1: Comparison of running times
+  For each function `f(n)` and time `t` in the following table, determine the
+  largest size `n` of a problem that can be solved in time `t`, assuming that
+  the algorithm to solve the problem takes `f(n)` microseconds.
+
+
+    ```plaintext
+    |         | 1 second | 1 minute | 1 hour | 1 day |
+    | lg n    |          |          |        |       |
+    | sqrt(n) |          |          |        |       |
+    | n       |          |          |        |       |
+    | nlg(n)  |          |          |        |       |
+    | n^2     |          |          |        |       |
+    | n^3     |          |          |        |       |
+    | 2^n     |          |          |        |       |
+    | n!      |          |          |        |       |
+    ```
diff --git a/problems/1-1/main.go b/problems/1-1/main.go
new file mode 100644
index 0000000..e867d16
--- /dev/null
+++ b/problems/1-1/main.go
@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func main() {
+	// 1 second = 1,000,000 microseconds
+	// 1 minute = 60 seconds = 60,000,000 microseconds
+	// 1 hour = 60 minutes = 3600 seconds = 3,600,000,000 microseconds
+	// 1 day = 24 hours = 1440 mins = 86400 seconds =  86,400,000,000 microseconds
+
+	// lg(n)
+	results := [4]float64{0, 0, 0, 0}
+	i := 0
+	for n := 1.0; ; n++ {
+		x := math.Log2(n)
+
+		if i == 0 && x > 1_000_000 {
+			results[i] = x
+			i++
+		}
+		if i == 1 && x > 60_000_000 {
+			results[i] = x
+			i++
+		}
+		if i == 2 && x > 3_600_000_000 {
+			results[i] = x
+			i++
+		}
+		if i == 3 && x > 86_400_000_000 {
+			results[i] = x
+			break
+		}
+	}
+
+	fmt.Printf("lg(n)|%v|%v|%v|%v|\n", results[0], results[1], results[2], results[3])
+}