控制台warn提示 Illegal DefaultValue null for parameter type integer java 出现这个问题主要是使用了 ApiModelProperty 注解修饰了非 String 类型的变量，而此时，example 未赋值造成。...

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We have an integer array arr, where all the integers in arr are equal except for one integer which is larger than the rest of the integers. You will not be give...

An integer interval [a, b] (for integers a < b) is a set of all consecutive integers from a to b, including a and b.

前两天去面试，被问到了一个线程同步的问题，两个线程依次输出1……100，一个线程只输出奇数，一个只输出偶数。之前工作中没写过线程同步的代码，只知道使用object的wait()和notify()方法可以实现线程同步，之前也看过线程池实现...

Problem Description To improve the organization of his farm, Farmer John labels each of his N (1 <= N <= 5,000) cows with a distinct serial number in the rang...

Problem Description The International Clown and Pierrot Competition (ICPC), is one of the most distinguished and also the most popular events on earth in the ...

Problem Description A DFS(digital factorial sum) number is found by summing the factorial of every digit of a positive integer.

Problem Description Give you a lot of positive integers, just to find out how many prime numbers there are.

Problem Description After the 32nd ACM/ICPC regional contest, Wiskey is beginning to prepare for CET-6. He has an English words table and read it every mornin...