数据结构与算法分析 第5章 larry nyhoff 清华大学出版社new

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1、Chapter5Chapter5:StandardC++Input/OutputandStringClassesExercises5.21.intstringCount(conststring&str,conststring&target)/*-------------------------------------------------------------------Findthenumberoftimesstringstrappearsinstringtarget.-----------------------------------------------------

2、--------------*/{intmatches=0;intposition=target.find(str);while(position!=string::npos){matches++;position=target.find(str,position+1);}returnmatches;}2.stringmonthName(intmonthNumber)/*-------------------------------------------------Convertamonthnumbertoitscorrespondingname.---------------

3、------------------------------------*/{switch(monthNumber){case(1):return"January";case(2):return"February";case(3):return"March";case(4):return"April";case(5):return"May";case(6):return"June";case(7):return"July";case(8):return"August";case(9):return"September";case(10):return"October";case(

4、11):return"November";case(12):return"December";default:cout<<"Month:illegalmonthnumber:"<//isupper(),tolower()intmonthNumber(stringmonthName)/*--------------------------------------------------Convertamonthnametoitscorrespondingnumber.--------

5、--------------------------------------------*/{for(inti=0;i

6、="may")return5;if(monthName=="june")return6;if(monthName=="july")return7;if(monthName=="august")return8;if(monthName=="september")return9;if(monthName=="october")return10;if(monthName=="november")return11;if(monthName=="december")return12;cout<<"MonthNumber:illegalmonthname:"<

7、dl;return0;}4.#include//islower(),toupper(),isupper(),tolower()stringlowerToUpper(stringstr)/*--------------------------------------------------Finduppercaseequivalentofastringstr.----------------------------------------------------*/