count:在指定區間上統計指定值出現的次數。
count_if:條件統計
max:判斷兩個數值中的較大值
max_element:查找指定區間的最大元素
min:判斷兩個數值中的較小值
min_element:查找指定區間的最小元素
random_shuffle:用來將指定區間上的元素按隨機順序排列
聲明：
#include?<algorithm> ?? template ?< class ?inputItr, class ?Type>?? iterator_traits<inputItr>::difference_type?count(inputItr?first,inputItr?last,const ?Type&?value);?? ?? template ?< class ?inputItr, class ?unaryPredicate>?? iterator_traits<inputItr>::difference_type?count_if(inputItr?first,inputItr?last,unaryPredicate?op);?? ?? template ?< class ?Type>?? const ?Type&?max( const ?Type&?aVal,? const ?Type&bVal);?? template ?< class ?Type, class ?compare>?? const ?Type&?max( const ?Type&?aVal, const ?Type&?bVal,compare?comp);?? ?? template ?< class ?forwardItr>?? forwardItr?max_element(forwardItr?first,forwardItr?last);?? template ?< class ?forwardItr,? class ?compare>?? forwardItr?max_element(forwardItr?first,forwardItr?last,?compare?comp);?? ?? template ?< class ?Type>?? const ?Type&?min( const ?Type&?aVal,? const ?Type&bVal);?? template ?< class ?Type, class ?compare>?? const ?Type&?min( const ?Type&?aVal, const ?Type&?bVal,compare?comp);?? ?? template ?< class ?forwardItr>?? forwardItr?min_element(forwardItr?first,forwardItr?last);?? template ?< class ?forwardItr,? class ?compare>?? forwardItr?min_element(forwardItr?first,forwardItr?last,?compare?comp);?? ?? template ?< class ?randomAccessItr>?? void ?random_shuffle(randomAccessItr?first,?randomAccessItr?last);?? template ?< class ?randomAccessItr,? class ?randomAccessGenerator>?? void ?random_shuffle(randomAccessItr?first,randomAccessItr?last,randomAccessGenerator?rand);??
示例代碼：
#include?<iostream> ?? #include?<list> ?? ?? #include?<string> ?? #include?<numeric> ?? #include?<iterator> ?? #include?<vector> ?? #include?<functional> ?? ?? #include?<algorithm> ?? ?? using ? namespace ?std;?? ?? int ?main()?{?? ????char ?cList[10]?=?{ 'Z' , 'a' , 'Z' , 'B' , 'Z' , 'c' , 'D' , 'e' , 'F' , 'Z' };?? ????vector<char >?charList(cList,cList+10);?? ????ostream_iterator<char >?screen(cout, "?" );?? ????cout?<<?"charList:" ?<<?endl;?? ????copy(charList.begin(),charList.end(),screen);?? ????cout?<<?endl;?? ?????? ?????? ????int ?noofzs?=?count(charList.begin(),charList.end(), 'Z' );?? ????cout?<<?"count?of?Z?=?" ?<<?noofzs?<<?endl;?? ?? ?????? ????int ?noofupper?=?count_if(charList.begin(),charList.end(),isupper);?? ????cout?<<?"count?of?Upper?=?" ?<<?noofupper?<<?endl;?? ?? ?? ????int ?list[10]?=?{12,34,56,21,34,78,34,55,12,25};?? ????ostream_iterator<int >?screenInt(cout,? "?" );?? ????cout?<<?"list:" ?<<?endl;?? ????copy(list,list+10,screenInt);?? ????cout?<<?endl;?? ?? ?????? ????int ?*?maxLoc?=?max_element(list,list+10);?? ????cout?<<?"the?Largest?element?is?" ?<<?*maxLoc?<<?endl;?? ?? ?????? ????int ?*?minLoc?=?min_element(list,list+10);?? ????cout?<<?"the?Smallest?element?is?" ?<<?*minLoc?<<?endl;?? ?? ?????? ????random_shuffle(list,list+10);?? ????cout?<<?"List.random_shuffle" ?<<?endl;?? ????copy(list,list+10,screenInt);?? ????cout?<<?endl;?? ?????? ????return ?0;?? }??
運行結果：
charList:
總結
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