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Solution.java文件中
public class Solution {
public static void main(String[] args){
String str = "abcabcbb";
System.out.println(lengthOfLongestSubstring(str));
}
public static int lengthOfLongestSubstring(String s) {
int j = 0;
int l = s.length();
for( int i=0;i<l;i++){
for(int k=0;k<l;k++){
if(i != k){
if(s.charAt(i) == s.charAt(k)){
s=deleteString(s,k);
}
}
}
}
return s.length();
}
public static String deleteString(String str,int k){
String delStr="";
for(int i=0; i<str.length();i++){
if(i!=k){
delStr += str.charAt(i);
}
}
return delStr;
}
}
javac Solution.java
可以正常编译
再运行
java Solution.class
报错错误: 找不到或无法加载主类 Solution.class
各种配置查看,.bash_profile也对了下
export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home"
export PATH="$JAVA_HOME/bin:$PATH"
export CLASSPATH=".:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar"
最后发现运行时不需要带 .class,不要带.class后缀,不要带.class后缀
➜ java Solution
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 7
at java.lang.String.charAt(String.java:658)
at Solution.lengthOfLongestSubstring(Solution.java:16)
at Solution.main(Solution.java:6)
终于报错了,运行正常