题解 | 高级操作符练习(1)
高级操作符练习(1)
https://www.nowcoder.com/practice/2d2e37474197488fbdf8f9206f66651c
select device_id,gender,age,university,gpa from user_profile where gpa>3.5 and gender = 'male'
高级操作符练习(1)
https://www.nowcoder.com/practice/2d2e37474197488fbdf8f9206f66651c
select device_id,gender,age,university,gpa from user_profile where gpa>3.5 and gender = 'male'
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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;
}
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