Task 1: Neural Networks 1a) Multi-layer Perceptron We use mean cross entropy loss, because it is good for multi-category problems; We use ReLu as acti ...
时间复杂度：public int strStr(String haystack, String needle) {
int[] next = new int[needle.length()];
//next数组的生成
next[0] = 0;
int prefixLen = 0;//共同前后缀长度
int i = 1,
