标签：print number from imp lis public table res creates
question:
Write a client that creates a symbol table mapping letter grades to numerical scores, as in the table below, then reads from standard input a list of letter grades and computes and prints the GPA (the average of the numbers corresponding to the grades).
answer:
import edu.princeton.cs.algs4.*; public class GPA { public static void main(String[] args) { ST<String, Double> st = new ST<String, Double>(); st.put("A+", 4.33); st.put("A", 4.00); st.put("A-", 3.67); st.put("B+", 3.33); st.put("B", 3.00); st.put("B-", 2.67); st.put("C+", 2.33); st.put("C", 2.00); st.put("C-", 1.67); st.put("D", 1.00); st.put("F", 0.00); double sum = 0; int n = 0; while(!StdIn.isEmpty()) { String grade = StdIn.readString(); sum += st.get(grade); n++; } StdOut.println(sum/n); } }
标签：print number from imp lis public table res creates
原文地址：https://www.cnblogs.com/w-j-c/p/9154422.html
