我正在閱讀 Sedgewick 的《算法》(第四版)。代碼是這樣的:package edu.princeton.cs.algs4;import java.util.Arrays;/** * The {@code BinarySearch} class provides a static method for binary * searching for an integer in a sorted array of integers. * <p> * The <em>indexOf</em> operations takes logarithmic time in the worst case. * <p> * For additional documentation, see <a href="https://algs4.cs.princeton.edu/11model">Section 1.1</a> of * <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne. * * @author Robert Sedgewick * @author Kevin Wayne */public class BinarySearch { private BinarySearch() { } public static int indexOf(int[] a, int key) { int lo = 0; int hi = a.length - 1; while (lo <= hi) { // Key is in a[lo..hi] or not present. int mid = lo + (hi - lo) / 2; if (key < a[mid]) hi = mid - 1; else if (key > a[mid]) lo = mid + 1; else return mid; } return -1; } @Deprecated public static int rank(int key, int[] a) { return indexOf(a, key); } public static void main(String[] args) { // read the integers from a file In in = new In(args[0]); int[] whitelist = in.readAllInts(); // sort the array Arrays.sort(whitelist); // read integer key from standard input; print if not in whitelist while (!StdIn.isEmpty()) { int key = StdIn.readInt(); if (BinarySearch.indexOf(whitelist, key) == -1) StdOut.println(key); } }}我已經(jīng)成功編譯了代碼:javac -cp /Users/user/documents/algorithms/algs4-master/target/algs4-1.0.0.0.jar BinarySearch.java但是當(dāng)我嘗試運(yùn)行代碼時(shí),出現(xiàn)錯(cuò)誤:user$ java -cp /Users/user/documents/algorithms/algs4-master/target/algs4-1.0.0.0.jar BinarySearch 錯(cuò)誤:無(wú)法找到或加載主類(lèi) BinarySearch 原因:java.lang.ClassNotFoundException:BinarySearch請(qǐng)幫忙告訴我這里發(fā)生了什么事。多謝!
1 回答

泛舟湖上清波郎朗
TA貢獻(xiàn)1818條經(jīng)驗(yàn) 獲得超3個(gè)贊
提供包含 main 方法和不包含 main 方法的類(lèi)的整個(gè)包,.java
因?yàn)槟谶\(yùn)行該類(lèi),而不是 java 文件:
edu.princeton.cs.algs4
javac -cp /Users/user/documents/algorithms/algs4-master/target/algs4-1.0.0.0.jar edu.princeton.cs.algs4.BinarySearch
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