lets1=Symbol（）；lets2=Symbol（）；s1===s2//true。
举一反三
- 以下程序的输出结果是 String s1="1",s2="2"; String s=s1+s2; System.out.println(s);
- There are 4 messages A,B,C and D, with probability 1/4, 1/8, 1/8 and 1/2 respectively. The occurrence of each message is independent of each other. Calculate the average information of each message A: 1.5 bit/symbol B: 2.5 bit/symbol C: 2 bit/symbol D: 1.75 bit/symbol
- 设s="abcd",s1="123",则执行语句s2=InsStr(s,2,s1)后，s2=（）
- Decide True or False: “The jar” in Wallace Stevens’s “Anecdote of the Jar” is a symbol of beauty.
- 一个一阶马尔可夫信源，转移概率为：P(S1|S1)=2/3,P(S2|S1)=1/3,P(S1|S2)1,P(S2|S2)=0,则其状态极限概率为: A: P(S1)=2/3,P(S2)=1/3 B: P(S1)=3/4,P(S2)=1/4 C: P(S1)=2/3,P(S2)=1 D: P(S1)=0,P(S2)=1/4