按字母数字序列对字符串排序
给定字符串的列表按字母数字顺序或字典顺序排序。例如,以下单词:Apple、Book、Aim,它们将按以下顺序排序:Aim、Apple、Book。如果有一些数字,则可以将它们放在字母字符串之前。
输入和输出
Input: A list of strings: Ball Apple Data Area 517 April Man 506 Output: Strings after sort: 506 517 Apple April Area Ball Data Man
算法
sortStr(strArr, n)
输入:所有字符串的列表、元素个数。
输出 −按字母数字排序的字符串。
Begin for round := 1 to n-1, do for i := 0 to n-round, do res := compare str[i] and str[i+1] //either +ve, or –ve or 0 if res > 0, then swap str[i] and str[i+1] done done End
示例
#include<iostream> #define N 8 using namespace std; void display(int n, string str[]) { for(int i = 0; i<n; i++) cout << str[i] << " "; //print the string from array cout << endl; } void sortStr(int n, string str[]) { int i, round, res; for(round = 1; round<n; round++) for(i = 0; i<n-round; i++) { res = str[i].compare(str[i+1]); if(res > 0) swap(str[i], str[i+1]);//swap strings } } main() { string str[N] = {"Ball", "Apple", "Data", "Area", "517", "April", "Man", "506"}; cout << "Strings before sort:"<< endl; display(N, str); sortStr(N, str); cout << "Strings after sort:"<<endl; display(N, str); }
输出
Strings before sort: Ball Apple Data Area 517 April Man 506 Strings after sort: 506 517 Apple April Area Ball Data Man
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