They asked if I had any driving experince
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How many unique handshakes if each person in a group of 10 give handshakes out to each and every other individual. (a) 100 (b) 50 (c) 45 (d) 20 (e) 10
Given a string with parenthesis like "()()(()(()()", check to see if there are matching pairs. If there are matching pairs, return true, else return false. For example, ()()() returns true, ()()()) returns false.
Write an emitter class: /* emitter = new Emitter(); // 1. Support subscribing to events. sub = emitter.subscribe('event_name', callback); sub2 = emitter.subscribe('event_name', callback2); // 2. Support emitting events. // This particular example should lead to the `callback` above being invoked with `foo` and `bar` as parameters. emitter.emit('event_name', foo, bar); // 3. Support unsubscribing existing subscriptions by releasing them. sub.release(); // `sub` is the reference returned by `subscribe` above */
Given an array of arrays which contain characters, find all the arrays with at least one common character and return them as pairs.
You are the PM of the "share" feature(which people use to share on feed, as a private message etc.). How would you measure success of this feature? What metrics would you use and why? Out of the ones you have mentioned, which is the most important and why? Followup questions: 1) Your team has implemented a change in the "share" and released it for A/B testing, where you realized that there is increase of 20% usage of the feature. would you decide to release it? 2) You have recently released the new feature, and you were informed by all local sites (Facebook sites in each country) that the usage has indeed increased by 20%, but the overall global data shows only 5% increase. How is this possible?
Given a integer , return corresponding ASCII char representation without using language building in feature. ex. input interger 1234, return "1234" in string or characters
How would you design an alarm clock for people who are deaf and blind at the same time?
Find the 20 longest strings in a text file.
1. Given a 3 array like below NSArray *a = [1,3,4,5]; NSArray *b = [-1,3,0,9]; NSArray *c = [0,31,32,22,6]; Find the elements from the three array which existing in atleast 2 arrays. Eg: [3, 0] Because 3 is presented in array a, b and 0 is presented in array b, c respectively. -(NSArray)find2ElementsAtleastPresentIn2Arrays:(NSArray*)aList b::(NSArray*)bList c::(NSArray*)cList{ // -- your code here. }
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