void function(int start, int end){
if (start > end) return;
int x= a[end]-a[start];
a[start] = a[start] + x;
a[end] = a[end] - x;
function(start+1, end-1);
}
main(){
scanf("%s", &a[0]);
int len = strlen(a);
function(0,len-1);
printf("%s\n", a);
}
--
Ankit Agarwal
Computer Science & Engg.
Integrated Dual Degree, V yr
Department of Electronics & Computer Engineering
Indian Institute of Technology Roorkee
Ph. no. +91-9580098805
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