查找sdddrtkjsfkkkasjdddj字符串中,出现次数最多的字符和次数。
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>查找最多字符串</title>
</head>
<body>
</body>
<script>
var str = "sdddrtkjsfkkkasjdddj";
var max = 0;
var count = 0;
var letter = "";
for(var i=1;i<=str.length;i++){
for(var j=1;j<=str.length;j++){
if(str[i] == str[j]){
count++;
}
}
if(count>=max){
max = count;
letter= str[i]
}
count = 0;
}
console.log("出现最多次的字符是"+letter+",次数树"+max)
</script>
</html>

DELETE FROM team WHERE id NOT IN
(SELECT id FROM
(SELECT MIN(id) AS id FROM team GROUP BY name) AS b);
判断 101-200 之间有多少个素数,并输出所有素数。
package demo2;
public class d2017111 {
public static void main(String[] args) {
int i;
int count = 0;
for (i = 100; i <= 200; i++) {
if ((i % 2 != 0) && (i % 3 != 0) && (i % 5 != 0) && (i % 7 != 0)) {
System.out.println(i);
count += 1;
}
}
System.out.println(“素数的个数:” + count);
}
}