util: add Uint160.Reverse()

pkg/util/uint160.go

@@ -60,6 +60,15 @@ func (u Uint160) StringLE() string {
 	return hex.EncodeToString(u.BytesLE())
 }
 
+// Reverse returns reversed representation of u.
+func (u Uint160) Reverse() (r Uint160) {
+	for i := 0; i < Uint160Size; i++ {
+		r[i] = u[Uint160Size-i-1]
+	}
+
+	return
+}
+
 // Equals returns true if both Uint256 values are the same.
 func (u Uint160) Equals(other Uint160) bool {
 	return u == other

pkg/util/uint160_test.go

@@ -94,3 +94,12 @@ func TestUInt160String(t *testing.T) {
 	assert.Equal(t, hexStr, val.String())
 	assert.Equal(t, hexRevStr, val.StringLE())
 }
+
+func TestUint160_Reverse(t *testing.T) {
+	hexStr := "b28427088a3729b2536d10122960394e8be6721f"
+	val, err := Uint160DecodeStringBE(hexStr)
+
+	require.NoError(t, err)
+	assert.Equal(t, hexStr, val.Reverse().StringLE())
+	assert.Equal(t, val, val.Reverse().Reverse())
+}