48 lines
1.7 KiB
Java
48 lines
1.7 KiB
Java
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/*This is a java program to find the second smallest element with given complexity. Complexity here is minimum space constraints. Inplace sorting and returning second element help achieving the space constraints.*/
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//This is a java program to find the second smallest element of N elements with the minimum space complexity constraints
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import java.util.Random;
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public class Second_Smallest_Element
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{
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static int kthminimum(int[] sequence, int k)
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{
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// Bubble Sort for length of sequence minus k times
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for (int i = 0; i < (sequence.length - k); i++)
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for (int j = 0; j < sequence.length - 1; j++)
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if (sequence[j] > sequence[j + 1])
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{
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sequence[j] = sequence[j] + sequence[j + 1];
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sequence[j + 1] = sequence[j] - sequence[j + 1];
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sequence[j] = sequence[j] - sequence[j + 1];
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}
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return sequence[k - 1];
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}
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public static void main(String args[])
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{
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Random random = new Random();
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int N = 20;
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int[] sequence = new int[N];
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for (int i = 0; i < N; i++)
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sequence[i] = Math.abs(random.nextInt(1000));
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System.out.println("Original Sequence: ");
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for (int i = 0; i < N; i++)
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System.out.print(sequence[i] + " ");
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System.out.println("\nSecond smallest element :\n"
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+ kthminimum(sequence, 2));
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}
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}
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/*
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Original Sequence:
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459 886 873 766 616 878 122 372 453 876 845 965 477 139 788 861 148 5 894 439
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Second smallest element :
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122
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Original Sequence:
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695 213 257 62 315 289 234 90 153 721 192 183 676 373 292 928 57 472 200 177
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Second smallest element :
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62
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