topic description Mathematical Combinatorial problems sources of topics and their own ideas competitive programs what result do you expect? What is the error message actually seen? I tried a way to solve this problem in O (n). But get the wron...
I did a question on leetcode, but for the string type, the push_back concatenation character failed the test, but changed to the plus sign to concatenate the character and passed it. topic link my two codes: class Solution { public: vector<...
for example, how can I switch to this version with ES3,? ...
it is not valid to set the method property in the form form to DELETE . The default setting is GET . HTML : : is there any way to initiate a DELETE request in HTML ? ...
I already know that the way to write a specified class is: * [@ class= class ] and I already know that the way to choose the first one is: div [n] what should be the combination of the two? For example, select the last element of class= cla...
let joke ={ a: 1 , b: 2 , c:false } for(let key in joke){ if(joke[key]== ){ alert( ) } } as above, in the loop check, c is a Boolean value false, judgment pops up alert, ask how to ignore the case that the key-valu...
the first time to write a project in vue, using the vux component library, now want to implement a style introduced on the left and right how to modify the original style? quote the component library like this, but I don t know how to change the st...