完成一维小波变换一级分解。此文件包含小波变换的mallat算法，经测试完全正确。-Completed a one-dimensional wavelet transform decomposition. This file contains the mallat wavelet transform algorithm, the test is correct.

一维小波变换一层重构，实现MALLAT算法重构，经测试完全正确。-Layer of one-dimensional wavelet transform reconstruction algorithm to achieve MALLAT reconstruction, tested entirely correct.