唯一随机数生成器

// 唯一随机数生成器
function uniqueRandom(min, max, count, type = 'integer') {
    if (max - min + 1 < count && type === 'integer') {
        throw new Error('范围太小，无法生成指定数量的唯一随机整数');
    }
    
    const generated = new Set();
    const results = [];
    
    while (results.length < count) {
        let randomValue;
        
        if (type === 'integer') {
            randomValue = Math.floor(Math.random() * (max - min + 1)) + min;
        } else {
            randomValue = Math.random() * (max - min) + min;
            randomValue = parseFloat(randomValue.toFixed(4));
        }
        
        const key = type === 'integer' ? randomValue : randomValue.toFixed(4);
        
        if (!generated.has(key)) {
            generated.add(key);
            results.push(randomValue);
        }
    }
    
    return results;
}