int read() {
int res = 0;
char c = getchar();
while (!isdigit(c)) c = getchar();
while (isdigit(c)) res = (res << 1) + (res << 3) + c - 48, c = getchar();
return res;
}
void printi(int x) {
if (x / 10) printi(x / 10);
putchar(x % 10 + '0');
}
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const flattern = (obj) => {
const res = {};
const dfs = (curr, path) => {
if(typeof curr === 'object' && curr !== null) {
const isArray = Array.isArray(curr);
for(let key in curr) {
const newPath = path ? isArray ? `${path}[${key}]` : `${path}.${key}` : key;
dfs(curr[key], newPath);
}
} else {
res[path] = curr
}
}
dfs(obj);
return res;
}查看3道真题和解析