go: add «1590. Make Sum Divisible by P»

Signed-off-by: Matej Focko <me@mfocko.xyz>

go/make-sum-divisible-by-p.go

@@ -0,0 +1,40 @@
+package main
+
+func minSubarray(nums []int, p int) int {
+	getTotalRemainder := func() int {
+		total := 0
+		for _, x := range nums {
+			total = (total + x) % p
+		}
+		return total
+	}
+	target := getTotalRemainder()
+
+	// whole array is divisible by p
+	if target == 0 {
+		return 0
+	}
+
+	mods := make(map[int]int)
+	mods[0] = -1
+
+	runningRemainder, foundMinimum := 0, len(nums)
+	for i, x := range nums {
+		runningRemainder = (runningRemainder + x) % p
+
+		complement := (runningRemainder + p - target) % p
+		length, found := mods[complement]
+		if found {
+			foundMinimum = min(foundMinimum, i-length)
+		}
+
+		mods[runningRemainder] = i
+	}
+
+	// didn't find any solution
+	if foundMinimum == len(nums) {
+		return -1
+	}
+
+	return foundMinimum
+}