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To void: forEach, forEachOrdered, peek stream.peek(System.out::println) // print without termination .filter(n -> n > 0) .distinct() .limit(10) .forEa 阅读全文
posted @ 2021-01-21 03:19
Zhentiw
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Saying that we have some icons and a target sum, for example 16. How to choose which and how many icons to include to reach the target but minize the 阅读全文
posted @ 2021-01-19 03:00
Zhentiw
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Sream<Employee> emps = ...; emps.sorted( Comparator.comparingInt(Employee::getSalary) .reversed() ).limit(10) .map(Employee::getName) .forEachOrdered( 阅读全文
posted @ 2021-01-18 22:43
Zhentiw
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A serial of number, you cannot add siblings number together. To calcaulate what is the max sum value. Thinking: 1. Weather I should add current number 阅读全文
posted @ 2021-01-18 18:21
Zhentiw
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<!-- HTML --> <div class="wrap"> <div class="headers"> <div class="scroller"> <div class="track"> <div class="heading">Heading 1</div> </div> ... </di 阅读全文
posted @ 2021-01-18 16:17
Zhentiw
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Fibonacci sequence: The most well-known approach is memoization. Advantage is fast, but space complexity is big. O(N). Bottom-up: 1 : Bottom-up dynami 阅读全文
posted @ 2021-01-18 03:35
Zhentiw
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Why need to use @ResponseEntity, first let's see what problem we might have when we don't use it. @RestController public class ProductsRestController 阅读全文
posted @ 2021-01-15 21:38
Zhentiw
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Interceptor jump in before controller. So request may not reach controller if Pre-process is not ok. Demo: package com.test.hplus.interceptors; import 阅读全文
posted @ 2021-01-15 19:56
Zhentiw
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In this lesson, you will learn how to extend a class's functionality through typescript decorators. Decorators provide a way to add both annotations a 阅读全文
posted @ 2021-01-14 04:21
Zhentiw
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@ControllerAdvice public class DefaultAttributeController { // apply default value @ModelAttribute("newuser") public User getDefaultUser() { return ne 阅读全文
posted @ 2021-01-13 19:40
Zhentiw
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