Iteration is the repetition of a block of statements within a computer program, usually with mutable state.
Iterative functions – loop-based imperative repetitions of a process.
Example
//iterative function calculates n!
function factorialIterative(n) {
var sum = 1;
if (n <= 1) {
return sum;
}
while (n > 1) {
sum *= n;
n -= 1;
}
return sum;
}
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