6 回答
已采纳
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lzjccc
TA贡献23条经验 获得超7个赞
int i=0; int j=0; String str="want you to know one thing"; for(i=0;i<str.length();i++){ if(str.charAt(i)=='n'){ j++; } } System.out.print(j);
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badbomb
TA贡献16条经验 获得超10个赞
String str = "want you know one thing"; int num=0; for(int i=0; i<str.length(); i++){ if(str.charAt(i) == 'n'){ num++; } } System.out.println(num);
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adn_boy
TA贡献11条经验 获得超0个赞
String str = "want you to know one thing"; int n = 'n'; char [] chars = str.toCharArray(); int count = 0; for (int i = 0;i < chars.length;i++){ if((int)chars[i] == n){ count ++; } }
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损失函数
TA贡献114条经验 获得超93个赞
亲测可用
String ss = "want you to know one thing";
byte[] ssb= ss.getBytes();
byte[] s = "n".getBytes();
int i = 0;
for (byte b : ssb) {
if(b == s[0]){
i++;
}
}
System.out.println(i);
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六道骸
TA贡献30条经验 获得超6个赞
String s= "want you to know one thing";
String[] ssss = s.split("n");
ssss 的长度-1;
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