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Hacker Rank: Day 7 Arrays
Task
Given an array,A, of N integers, print A's elements in reverse order as a single line of space-separated numbers.
Example
A=[1,2,3,4]
Print 4 3 2 1. Each integer is separated by one space.
Input Format
The first line contains an integer,N(the size of our array).
The second line contains N space-separated integers that describe array A's elements.
Constraints
1 <= N <= 1000
1 <= A[i] <= 10000, where A[i] is the ith integer in the array.
Output Format
Print the elements of array A in reverse order as a single line of space-separated numbers.
Sample Input
4
1 4 3 2
Sample Output
2 3 4 1
PHP Solutions:
$stdin = fopen("php://stdin", "r");fscanf($stdin, "%d\n", $n);
fscanf($stdin, "%[^\n]", $arr_temp);
$num = array_map('intval', preg_split('/ /', $arr_temp, -1, PREG_SPLIT_NO_EMPTY));
$start = 0;
$end = $n-1;
while($start < $end){
$temp = $num[$start];
$num[$start] = $num[$end];
$num[$end] = $temp;
$start+=1;
$end-=1;
}
for($i=0;$i<$n;$i++){
print $num[$i].' ';
}
fclose($stdin);Tags : hackerRank, PHP,
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