There is a string s of length 3, consisting of uppercase and lowercase English letters. Check if it is equal to “YES” (without quotes), where each letter can be in any case. For example, “yES”, “Yes”, “yes” are all allowable.
The first line of the input contains an integer t(1≤t≤103) — the number of testcases.
The description of each test consists of one line containing one string s consisting of three characters. Each character of s is either an uppercase or lowercase English letter.
輸入的第一行包含了一個整數 t(1≤t≤103) — 測試案例的數量。
每一個測試案例包含了一行,裡面有一個字串 s 由三個字元所組成。 組成 s 的字元只會為英文大寫或小寫字母。
輸出
For each test case, output “YES” (without quotes) if s satisfies the condition, and “NO” (without quotes) otherwise.
You can output “YES” and “NO” in any case (for example, strings “yES”, “yes” and “Yes” will be recognized as a positive response).
The first five test cases contain the strings “YES”, “yES”, “yes”, “Yes”, “YeS”. All of these are equal to “YES”, where each character is either uppercase or lowercase.
int n = int.Parse(Console.ReadLine());
for(int i=0; i<n; i++){
var str = Console.ReadLine();
var res = string.Compare("YES", str , StringComparison.OrdinalIgnoreCase);
Console.WriteLine(res==0?"YES":"NO");
}
方案2
int n = int.Parse(Console.ReadLine());
for(int i=0; i<n; i++){
var str = Console.ReadLine().ToUpper();
var res = "YES"==str;
Console.WriteLine(res?"YES":"NO");
}
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