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// Add the element to the result array result.push(prop); } } // Return the array containing duplicate elements return result; } // Output the result of the function with a sample array console.log(find_duplicate_in_array([1, 2, -2, 4, 5, 4, 7, 8, 7, 7, 71, 3, 6]));...
In the callback function, we again use the indexOf() method to compare the current element index with other elements in the array. If both the indexes are the same, it means that the current item is not duplicate:const numbers = [1, 2, 3, 2, 4, 5, 5, 6]; const isDuplicate =...
This post will discuss how to find duplicate items in an array in JavaScript. Finding duplicate items in an array in JavaScript is a common task that can be done in various ways. Some of the functions are: 1. Using nested loops We can use nested loops to compare each element of the ...
% MATLAB code for if the array contains % duplicate elements array = [1 2 3 4 5 6 2 4 2] % find() will get the index of element % store it in the index index = find(array==2) 输出: 当数组包含重复值时,find()函数将打印相应元素的所有索引。因此,如果您不想要该元素的所有索引,则...
《LeetCode 442. Find All Duplicates in an Array (Solution Explained)》 本题的难点之一是如何正确理解题目,我一开始眼睛瞟了,只看见一个关键信息“所有数字在输入串中只能出现一次”,而没有看到关键信息“1 ≤ a[i] ≤n(n= size of array)”。该信息的意思是:数组内所有元素的值都在 1 与 size 之间...
System.out.println("Duplicate Element : "+ item); } } } } Stream API Method Java 8 introduced theStream API, which provides a more concise way of finding duplicates in a List. You can use thedistinct()method to removeduplicatesand compare the size of the original List with the size of...
Find the minimum element. You may assume no duplicate exists in the array. 思路:这个是找最小,和找指定数字其实差不多的。画个示意图吧 二分查找,关键是扔掉不包含最小值的那一半。 1.如果右半部分满足 n[m] < n[r] 则右半部分是递增的, 让 r = m 因为m位置有可能是最小的,把递增的那半扔掉...
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=array[array[fast]]ifslow==fast:break# Start up another pointer from the end of the array and march it forward# until it hits the pointer inside the array.finder=len(array)-1whileTrue:slow=array[slow]finder=array[finder]# If the two hit, the intersection index is the duplicate element...