routine

26/01/go/3507.go

@@ -0,0 +1,38 @@
+package A
+
+import "math"
+
+func isIncrease(nums []int) bool {
+	for i := range nums {
+		if i == len(nums)-1 {
+			break
+		}
+		if nums[i] > nums[i+1] {
+			return false
+		}
+	}
+	return true
+}
+
+func minimumPairRemoval(nums []int) int {
+	ans := 0
+	index := 0
+	temp := 0
+	for !isIncrease(nums) {
+		minX := math.MaxInt
+		for i := range nums {
+			if i == len(nums)-1 {
+				break
+			}
+			temp = nums[i] + nums[i+1]
+			if minX > temp {
+				minX = temp
+				index = i
+			}
+		}
+		nums[index] = minX
+		nums = append(nums[:index+1], nums[index+2:]...)
+		ans++
+	}
+	return ans
+}