比较两个数组后，仅删除第一个重复值和所有其他匹配值

function removeDuplicates(arr1, arr2) {
  var duplicateIndex = -1;
  
  // Compare arrays and find the first duplicate value
  for (var i = 0; i < arr1.length; i++) {
    for (var j = 0; j < arr2.length; j++) {
      if (arr1[i] === arr2[j]) {
        duplicateIndex = i;
        break;
      }
    }
    if (duplicateIndex !== -1) {
      break;
    }
  }
  
  // Remove all matching values
  if (duplicateIndex !== -1) {
    var indexesToRemove = [];
    
    for (var i = duplicateIndex; i < arr1.length; i++) {
      if (arr1[i] === arr2[0]) {
        indexesToRemove.push(i);
      }
    }
    
    // Delete elements from array
    for (var i = indexesToRemove.length - 1; i >= 0; i--) {
      arr1.splice(indexesToRemove[i], 1);
    }
  }
  
  return arr1;
}

// Test the function
var arr1 = [1, 2, 3, 4, 2, 5];
var arr2 = [2, 5];

var result = removeDuplicates(arr1, arr2);
console.log(result); // Output: [1, 3, 4, 2]