了解功能，找到模式

Understanding function to find mode

本文关键字：模式 功能 了解      更新时间：2023-09-26

希望这是一个可以问的问题…所以我得到了一点帮助，创建了一个函数来查找模式(在数组中出现次数最多的数字)。但现在我需要一点帮助来理解它……(我是一个编程新手)数据是保存"信息"，包含多个数组在另一个文件。

let mode = function(data) {
  data.sort(function(a, b) {
    return a - b;    
  });
  let mode = {},
  highestOccurrence = 0,
  modes = [];
  data.forEach(function(element) {
    if (mode[element] === undefined) {
      mode[element] = 1;
    } else {
      mode[element]++;
    }
    if (mode[element] > highestOccurrence) {
      modes = [element];
      highestOccurrence = mode[element];
    } else if (mode[element] === highestOccurrence) {
      modes.push(element);
      highestOccurrence = mode[element];
    }
  });
  return modes;
};

所以一开始我只是对函数进行排序，这样数字就会以正确的顺序出现。但是有人能帮我理解一下函数的其余部分吗?

我添加了一些注释，我可以推断只有您提供的代码。你可以为你的问题提供更多的背景，比如你有什么类型的数据，你想要达到什么目的，或者提供一些有用的例子。

let mode = function(data) {
  data.sort(function(a, b) {
    return a - b;    
  });
  let mode = {},
  highestOccurrence = 0,
  modes = [];
  // This loops through data array (It should be data here and not data1)
  data.forEach(function(element) {
    // Here you check if the mode object already have that element key,  
    // setting the first occurence or incrementing it
    if (mode[element] === undefined) {
      mode[element] = 1;
    } else {
      mode[element]++;
    }
    // After that it checks if that mode has the higher occurence
    if (mode[element] > highestOccurrence) {
      // If it has the higher occurence it sets the modes to an array with
      // that element and the highestOccurrence value to that value
      modes = [element];
      highestOccurrence = mode[element];
    } else if (mode[element] === highestOccurrence) {
      // If it has the same number of occurences it just adds that mode to
      // the modes to be returned
      modes.push(element);
      highestOccurrence = mode[element];
    }
  });
  return modes;
};

希望这对你有帮助

相关文章：