按照字母数字顺序对字符串排序
给定的字符串列表按字母数字顺序或字典顺序排序。例如对于这些单词:Apple、Book、Aim,将按 Aim、Apple、Book 的顺序排序。如果有数字,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、元素数量。
输出−按照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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