题解 | #小红的区间查询#
小红的区间查询
https://www.nowcoder.com/practice/cbaecf16197a4136b8a593a7a270f4ab
import java.io.*;
import java.util.*;
import java.math.BigInteger;
public class Main {
static int N = 210;
static int[] a = new int[N];
static void solve() {
int n=in.nextInt(),q=in.nextInt();
for(int i=1;i<=n;i++) {
a[i] = in.nextInt();
}
while(q-->0) {
int op = in.nextInt(),k = in.nextInt(), x = in.nextInt();
if(op==1) {
a[k]=x;
}else{
int ans=0;
for(int i=1;i<=k;i++) {
if(a[i]==x) ans++;
}
out.println(ans);
}
}
}
public static void main(String[] args) {
solve();
out.flush();
}
static FastReader in = new FastReader();
static PrintWriter out = new PrintWriter(System.out);
static class FastReader {
static BufferedReader br;
static StringTokenizer st;
FastReader() {
br = new BufferedReader(new InputStreamReader(System.in));
}
String next() {
String str = "";
while(st==null||!st.hasMoreElements()) {
try {
str = br.readLine();
} catch(IOException e) {
throw new RuntimeException(e);
}
st = new StringTokenizer(str);
}
return st.nextToken();
}
int nextInt() {
return Integer.parseInt(next());
}
double nextDouble() {
return Double.parseDouble(next());
}
long nextLong() {
return Long.parseLong(next());
}
}
}
