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# Sorting large array of long long int

 2 Hey guys, i'm working on a problem where I have to sort large array of long long int ( array size of nearly 1000000). I've tried to do it with merge sort as it has a complexity of O(n*log(n)) in worst case but still getting TLE. So , is there's a most efficient way (time speaking) to sort all this data ? thank you :) asked 09 Mar '14, 20:21 26●1●1●4 accept rate: 0%

 0 i dont know why but qsort() didnt work for me when i tried to sort %lld, so i used sort(a, a+n) from  answered 09 Mar '14, 23:26 1★garakchy 1.1k●16●30●48 accept rate: 1%
 0 Same thing. I tried a different version where I used a vector and the sort function from but still getting TLE :/ answered 10 Mar '14, 03:17 26●1●1●4 accept rate: 0% i dont know vectors. why dont you use maps, which automatically sorts (10 Mar '14, 04:13) garakchy1★ I don't get it. what do you mean by using maps ? (10 Mar '14, 04:29)
 0 Advice: shortn your long integer to their decimals by dividing it to {100,1000 or 1000000}. put them in new array , apply function "Sort" on the new array, then arange your real 'the long' array according to the positions of the small array. Note: this way is way successful with diffrent long Numbers array, but i don't now for simlar big no. with least digits changes, for ex: 966662.. 966661.. 966663.. 9666631.. answered 11 Mar '14, 14:02 70●1●2●4 accept rate: 11%
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question asked: 09 Mar '14, 20:21

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last updated: 16 Mar '14, 12:14