Merge pull request #395 from openset/develop

Add: Reverse Bits

Author: Shuo

problems/reverse-bits/reverse_bits.go

@@ -1 +1,7 @@
 package reverse_bits
+
+import "math/bits"
+
+func reverseBits(num uint32) uint32 {
+	return bits.Reverse32(num)
+}

problems/reverse-bits/reverse_bits_test.go

@@ -1 +1,27 @@
 package reverse_bits
+
+import "testing"
+
+type caseType struct {
+	input    uint32
+	expected uint32
+}
+
+func TestReverseBits(t *testing.T) {
+	tests := [...]caseType{
+		{
+			input:    43261596,
+			expected: 964176192,
+		},
+		{
+			input:    4294967293,
+			expected: 3221225471,
+		},
+	}
+	for _, tc := range tests {
+		output := reverseBits(tc.input)
+		if output != tc.expected {
+			t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)
+		}
+	}
+}