从数组中获取n个不重叠的m大小的样本

function getSamplesFromArray(arr, n, m) {
  const result = [];
  
  // 确保数组长度足够容纳所需的样本数
  if (arr.length < n * m) {
    throw new Error('数组长度不足');
  }
  
  // 从数组中随机选择起始索引
  const startIndex = Math.floor(Math.random() * (arr.length - n * m + 1));
  
  // 依次获取样本
  for (let i = 0; i < n; i++) {
    const sample = arr.slice(startIndex + i * m, startIndex + i * m + m);
    result.push(sample);
  }
  
  return result;
}

const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const n = 2;
const m = 3;
const samples = getSamplesFromArray(array, n, m);
console.log(samples);