1、数组定义 arr1 = [] arr2 = Array.new arr3 = ['1','2','3'] 2、输出 print arr3,"\n" #123 puts arr3[0] #1 print arr3.join(",") #1,2,3 3、访问数组元素 arr1[0] arr1[-1] #这个比较有意思,意思是最后一个的数据 arr1.first arr1.last arr1.max arr1.min arr1.length arr1.size 4、数组操作 arr3[4] = '5' #此时arr3[3]默认尾nil arr3.delete_at(3) #删除指定下标的元素 arr3[2] = ["3a","3b","3c"] #可以这样来做 arr3.delete(["3a","3b","3c"]) #可以删除上面添加的 arr3.push('6') #插入元素 arr3.insert(3,"b") #在指定位置插入新元素 arr3<<"f"<<2 #从左至右一次加入元素 arr3.pop #删除尾元素 arr3.shift #删除首元素 arr3.clear #清空数组 5、数组运算 aaa = [" aa ",4,5," bb "] bbb = [4,1,3,2,5] print aaa + bbb,"\n" # aa 45 bb 41325 print aaa*2,"\n" # aa 45 66 aa 45 66 print bbb - aaa #132 print aaa | bbb,"\n" # aa 45 bb 132 print aaa & bbb,"\n" #45 print bbb.sort,"\n" #12345 排序 print aaa.reverse,"\n" # bb 54 aa 倒置 print bbb.sort.reverse,"\n" #54321 降序
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