如何在数组中搜索重复的对象？

function findDuplicateObjects(arr) {
    const seen = new Set();
    const duplicates = [];

    for (const item of arr) {
        const itemStr = JSON.stringify(item);
        if (seen.has(itemStr)) {
            duplicates.push(item);
        } else {
            seen.add(itemStr);
        }
    }

    return duplicates;
}

// 示例使用
const array = [
    { id: 1, name: 'Alice' },
    { id: 2, name: 'Bob' },
    { id: 1, name: 'Alice' },
    { id: 3, name: 'Charlie' }
];

console.log(findDuplicateObjects(array));
// 输出: [ { id: 1, name: 'Alice' } ]

function findDuplicateObjects(arr) {
    const seen = new Map();
    const duplicates = [];

    for (const item of arr) {
        const keys = Object.keys(item).sort().join('|');
        if (seen.has(keys)) {
            duplicates.push(item);
        } else {
            seen.set(keys, item);
        }
    }

    return duplicates;
}

// 示例使用
const array = [
    { id: 1, name: 'Alice' },
    { id: 2, name: 'Bob' },
    { name: 'Alice', id: 1 },
    { id: 3, name: 'Charlie' }
];

console.log(findDuplicateObjects(array));
// 输出: [ { id: 1, name: 'Alice' }, { name: 'Alice', id: 1 } ]