We can also implement our custom function to return the index of the first occurrence of the specified element in an array. The idea is to perform a linear search on the array using a regular for loop, and terminate the search on the first matching item. If the array is sorted, we ...
int item = 5; int index = list.FindIndex(a => a == item); if (index != -1) { Console.WriteLine(String.Format("Element {0} is found at index {1}", item, index)); } else { Console.WriteLine("Element not found in the given list."); } } } /* Output: Element 5 is foun...
FindLastIndex ForEach GetEnumerator GetLength GetLongLength GetLowerBound GetUpperBound GetValue IndexOf Initialize LastIndexOf Resize Reverse SetValue 排序 TrueForAll 显式接口实现 ArraySegment<T>.Enumerator ArraySegment<T> ArrayTypeMismatchException
sqrt(element); factor += 2) { if (element % factor === 0) { return false; } } return true; } console.log([4, 6, 8, 9, 12].findIndex(isPrime)); // -1,没有找到 console.log([4, 6, 7, 9, 12].findIndex(isPrime)); // 2(array[2] 是 7) ...
语法:let newArray = oldArray.map((item, index, arr) => {}) item当前元素、index当前索引、arr原数组 let arr = [1,6,9,10,100,25]; const newArr=arr.map(item=>{if(item %2===0) item=item*10 ;returnitem });//偶数*10console.log(newArr);//[1, 60, 9, 100, 1000, 25] 返...
if (text.Length > 0 && start >= 0) { // Obtain the location of the first character found in the control // that matches any of the characters in the char array. int indexToText = richTextBox1.Find(text, start); // Determine whether any of the chars are found in richTextBox1....
if (text.Length > 0 && start >= 0) { // Obtain the location of the first character found in the control // that matches any of the characters in the char array. int indexToText = richTextBox1.Find(text, start); // Determine whether any of the chars are found in richTextBox1....
We can use it to find the first index of a specific value in an array, as shown below. a=np.array([7,8,9,5,2,1,5,6,1])print(np.where(a==1)[0][0]) Output: 5 Use thenonzero()Function to Find the First Index of an Element in a NumPy Array ...
在下文中一共展示了RubyArray.FindIndex方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。 示例1: RubyArray_Basic ▲点赞 6▼ publicvoidRubyArray_Basic(){
Find the Index of an Array Element in Java - When working with arrays in Java, it is frequently essential to discover the record of a particular component inside the array. This record can be utilized to get to or control the component as required. In th