string repeat

Interview questionsRepeats the output of a given string (the str first argument) n times (the num second argument) and num returns an empty string if the second argument is not a positive number.function repeatstringnumtimes (str, num) { return

Requirements:Important thing to say 3 times!Repeats a specified string num times, and returns an empty string if num is a negative number.Results: repeat("*", 3)should be returned "***" . repeat("abc", 3)should be returned

Original question Find the substring with the longest repeat times in a string and calculate its repeat times. For example, the string "ABC fghi bc kl abcd lkm abcdefg" and returns "ABCD" and 2.My ideas For convenient expression, we use the variable

Difference between concat and concat_ws () and group_concat (), repeat () string functions 1, concat () functions 1.1 The concat function of MySQL can connect one or more strings, such Mysql> select concat ('10 '); + -------------- + | Concat ('10')

1. Concat () function1.1 The Concat function of MySQL can connect one or more strings, suchMysql> select Concat ('10 ');+ -------------- +| Concat ('10') |+ -------------- +| 10 |+ -------------- +1 row in SET (0.00 Sec) Mysql> select Concat ('11', '

JS Array to repeat the first of several methods: is also the most stupid bar.Array.prototype.unique1 = function () {var r = new Array ();Label:for (var i = 0, n = this.length; i for (var x = 0, y = r.length; x if (r[x] = = This[i]) {Continue label;}}

Copy Code code as follows: /** * Name: Find the number of times the elements in the array are repeated to multiple and repeat the number of times * Description: * The elements in the array may be duplicated, and this method can find the

I have a data table zq + ------- + -------- + Trend + --------- + -------- + --------- + | zq_id | zq_dm | zq_mc | zqlx_id | fllx_id | jys_id | region | + ------- + -------- + -------------- + --------- + -------- + --------- + | 1 | 000001 | Ping

There is an array of data that needs to be displayed on the HTML page, which is now displayed in Ng-repeat mode. But the character length of the title in the array is longer, so if you want to limit the number of characters that are displayed on an

Angular ng-repeat Traversal rendering In the business sometimes need to get the data asynchronously and ng-repeat traversal rendering finished after the page to perform an operation, angular itself does not provide listening to ng-repeat rendering