12 lines
467 B
JavaScript
12 lines
467 B
JavaScript
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function longest_common_starting_substring(arr1){
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var arr= arr1.concat().sort(),
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a1= arr[0], a2= arr[arr.length-1], L= a1.length, i= 0;
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while(i< L && a1.charAt(i)=== a2.charAt(i)) i++;
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return a1.substring(0, i);
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}
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console.log(longest_common_starting_substring(['go', 'google']));
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console.log(longest_common_starting_substring(['SQLInjection', 'SQLTutorial']));
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console.log(longest_common_starting_substring(['abcd', '1234']));
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