Two sum: Difference between revisions
Added Kotlin
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{{Out}}
<lang JavaScript>[[1,3]]</lang>
=={{header|Kotlin}}==
<lang scala>// version 1.0.5-2
fun twoSum(a: IntArray, targetSum: Int): Pair<Int, Int>? {
if (a.size < 2) return null
var sum: Int
for (i in 0 .. a.size - 2) {
if (a[i] <= targetSum) {
for (j in i + 1 .. a.size - 1) {
sum = a[i] + a[j]
if (sum == targetSum) return Pair(i, j)
if (sum > targetSum) break
}
}
else break
}
return null
}
fun main(args: Array<String>) {
val a = intArrayOf(0, 2, 11, 19, 90)
val targetSum = 21
val p = twoSum(a, targetSum)
if (p == null)
println("No two numbers were found whose sum is $targetSum")
else
println("The numbers with indices ${p.first} and ${p.second} sum to $targetSum")
}</lang>
{{out}}
<pre>
The numbers with indices 1 and 3 sum to 21
</pre>
=={{header|Lua}}==
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