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Two Sum in Sorted input array
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//'main' method must be in a class 'Rextester'. //Compiler version 1.8.0_111 import java.util.*; import java.lang.*; //Two sum in sorted input array class Rextester { public static void main(String args[]) { for(int index:twoSum(new int[]{2,7,13,19,21},15)) System.out.print(index+" "); } public static int[] twoSum(int[] numbers, int target) { for(int i=0,j=numbers.length-1;i<j;){ int total = numbers[i]+numbers[j]; if(total==target) return new int[]{i+1,j+1}; if(total>target) j--; else if(total<target) i++; } return null; } }
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Compilation time: 0.73 sec, absolute running time: 0.16 sec, cpu time: 0.15 sec, memory peak: 18 Mb, absolute service time: 0,9 sec
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