一行搞定-统计一句话中每个单词出现的个数 >>> s'i am a boy a bood boy a bad boy' 方式一:>>> dict([(i,s.split().count(i)) for i in s.split()]){'a': 3, 'boy': 3, 'i': 1, 'am': 1, 'bad': 1, 'bood': 1} >>> set([(i,s.split().count(i)) for i in s.split()])se
题目大意 https://leetcode.com/problems/count-primes/description/ 204. Count Primes Count the number of prime numbers less than a non-negative number, n. Example: Input: 10Output: 4Explanation: There are 4 prime numbers less than 10, they are 2, 3, 5, 7.
http://outofmemory.cn/code-snippet/815/java-zishutongji 一个api,位于apache.commons.lang.StringUtils类下的一个StringUtils.countMatches(paragraph, string);方法,这个方法返回值是一个数字 代码: package cn.outofmemory; import org.apache.commons.lang3.StringUtils; public class