移除 C++ 中字符串中的尾随零
在此程序中,我们将看到如何在 C++ 中移除字符串中的尾随零。有时,某些字符串可能包含尾随零,例如“00023054”。执行此程序后,它将仅返回“23054”。初始零已被移除。
Input: A string with trailing zeros “000023500124” Output: “23500124”
算法
Step 1: Get the string Step 2: Count number of trailing zeros n Step 3: Remove n characters from the beginning Step 4: return remaining string.
示例代码
#include<iostream>
using namespace std;
main() {
string my_str = "000023500124";
int num = 0;
cout << "Number with Trailing Zeros :" << my_str << endl;
//count number of trailing zeros in the string
while(my_str[num] == '0') {
num++;
}
my_str.erase(0, num); //erase characters from 0 to i index
cout << "Number without Trailing Zeros :" << my_str;
}输出
Number with Trailing Zeros :000023500124 Number without Trailing Zeros :23500124
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