数组的调用，+，-等符号位置的处理

写一个统计就业情况的程序.

程序可以:

a)使用户以如下格式输入新增或减少的就业机会:

August 27

b)统计:1.每个月就业情况的变化

2.就业情况最好的月份

3.就业情况最差的月份

程序中变量EmploymentStatistics存放各月的就业数,并提供方法netChange, worstMonth, bestMonth.



例如用户的输入是:



August 27 February -6 March 120 April 62 May -90 June 21 May 30 July 82

October 100 August -4 September 22 December 43 October -20 September 15 October 40

程序计算结果:



Month Net Jobs

January 0

February -6

March 120

April 62

May -90+30 = -60

June 21

July 82

August 27 -4 = 23

September 22+15 = 37

October 100-20 + 40 = 120

November 0

December 43



the total number of jobs for the year: 442

b ii: the month(s) with the smallest value: May

b iii: the month(s) with the largest value: March, October

-Array of calls,+,- symbols such as the location of processing

Write a statistical procedure for the employment situation.

Program can:

a) allows the user to input the following format to add or reduce employment opportunities:

August 27

b) Statistics: 1. monthly changes in employment

Two. The best month of employment

3. The worst month of employment

Process variable EmploymentStatistics the records of the number of months of employment, and provide methods netChange, worstMonth, bestMonth.



For example, user input is:



August 27　February-6　March 120　April 62　May-90　June 21　May 30　July 82　

October 100　August-4　September 22　December 43　October-20　September 15　October 40

Procedure results:



Month Net Jobs

January 0

February-6

March 120

April 62

May-90+30 =-60

June 21

July 82

August 27-4 = 23

September 22+15 = 37

October 100-20+ 40 = 120

November 0

December 43



the total number of jobs for the year: 442

b ii: the month