added maths files

go.mod

@@ -5,20 +5,22 @@ go 1.23.1
 require (
 	github.com/go-chi/chi v1.5.5
 	github.com/joho/godotenv v1.5.1
+	github.com/redis/go-redis/v9 v9.7.0
 	github.com/robfig/cron/v3 v3.0.1
+	github.com/stretchr/testify v1.8.4
 	go.mongodb.org/mongo-driver v1.17.2
 	go.uber.org/zap v1.27.0
 	gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22
 )
 
 require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/klauspost/compress v1.16.7 // indirect
 	github.com/montanaflynn/stats v0.7.1 // indirect
-	github.com/redis/go-redis/v9 v9.7.0 // indirect
-	github.com/stretchr/testify v1.8.4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
@@ -27,4 +29,7 @@ require (
 	golang.org/x/crypto v0.26.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/text v0.17.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,3 +1,7 @@
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -14,6 +18,12 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/klauspost/compress v1.16.7 h1:2mk3MPGNzKyxErAw8YaohYh69+pa4sIQSC0fPGCFR9I=
 github.com/klauspost/compress v1.16.7/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/montanaflynn/stats v0.7.1 h1:etflOAAHORrCC44V+aR6Ftzort912ZU+YLiSTuV8eaE=
 github.com/montanaflynn/stats v0.7.1/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -70,7 +80,12 @@ golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 h1:VpOs+IwYnYBaFnrNAeB8UUWtL3vEUnzSCL1nVjPhqrw=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

pkg/http/maths.go

@@ -0,0 +1,203 @@
+package http
+
+import (
+	"fmt"
+	"math"
+)
+
+func sum(a, b int) int {
+	return a + b
+}
+
+func subtract(a, b int) int {
+	return a - b
+}
+
+func multiply(a, b int) int {
+	return a * b
+}
+
+func divide(a, b int) (int, error) {
+	if b == 0 {
+		return 0, fmt.Errorf("division by zero")
+	}
+	return a / b, nil
+}
+
+func modulus(a, b int) (int, error) {
+	if b == 0 {
+		return 0, fmt.Errorf("division by zero")
+	}
+	return a % b, nil
+}
+
+func power(a, b int) int {
+	return int(math.Pow(float64(a), float64(b)))
+}
+
+func squareRoot(a int) (int, error) {
+	if a < 0 {
+		return 0, fmt.Errorf("negative number")
+	}
+	return int(math.Sqrt(float64(a))), nil
+}
+
+func factorial(a int) (int, error) {
+	if a < 0 {
+		return 0, fmt.Errorf("negative number")
+	}
+	if a == 0 {
+		return 1, nil
+	}
+	result := 1
+	for i := 1; i <= a; i++ {
+		result *= i
+	}
+	return result, nil
+}
+
+func fibonacci(n int) ([]int, error) {
+	if n < 0 {
+		return nil, fmt.Errorf("negative number")
+	}
+	fib := make([]int, n)
+	if n > 0 {
+		fib[0] = 0
+	}
+	if n > 1 {
+		fib[1] = 1
+	}
+	for i := 2; i < n; i++ {
+		fib[i] = fib[i-1] + fib[i-2]
+	}
+	return fib, nil
+}
+
+func gcd(a, b int) int {
+	if b == 0 {
+		return a
+	}
+	return gcd(b, a%b)
+}
+
+func lcm(a, b int) int {
+	return (a * b) / gcd(a, b)
+}
+
+func isPrime(n int) bool {
+	if n <= 1 {
+		return false
+	}
+	for i := 2; i*i <= n; i++ {
+		if n%i == 0 {
+			return false
+		}
+	}
+	return true
+}
+
+func primeFactors(n int) []int {
+	factors := []int{}
+	for i := 2; i*i <= n; i++ {
+		for n%i == 0 {
+			factors = append(factors, i)
+			n /= i
+		}
+	}
+	if n > 1 {
+		factors = append(factors, n)
+	}
+	return factors
+}
+
+func isPalindrome(s string) bool {
+	left, right := 0, len(s)-1
+	for left < right {
+		if s[left] != s[right] {
+			return false
+		}
+		left++
+		right--
+	}
+	return true
+}
+
+func reverseString(s string) string {
+	runes := []rune(s)
+	for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
+		runes[i], runes[j] = runes[j], runes[i]
+	}
+	return string(runes)
+}
+
+func isAnagram(s1, s2 string) bool {
+	if len(s1) != len(s2) {
+		return false
+	}
+	counts := make(map[rune]int)
+	for _, r := range s1 {
+		counts[r]++
+	}
+	for _, r := range s2 {
+		counts[r]--
+		if counts[r] < 0 {
+			return false
+		}
+	}
+	return true
+}
+
+func isArmstrong(n int) bool {
+	sum := 0
+	digits := len(fmt.Sprintf("%d", n))
+	for n > 0 {
+		digit := n % 10
+		sum += int(math.Pow(float64(digit), float64(digits)))
+		n /= 10
+	}
+	return sum == n
+}
+
+func isPerfectNumber(n int) bool {
+	sum := 0
+	for i := 1; i <= n/2; i++ {
+		if n%i == 0 {
+			sum += i
+		}
+	}
+	return sum == n
+}
+
+func isHappyNumber(n int) bool {
+	seen := make(map[int]bool)
+	for n != 1 && !seen[n] {
+		seen[n] = true
+		sum := 0
+		for n > 0 {
+			digit := n % 10
+			sum += digit * digit
+			n /= 10
+		}
+		n = sum
+	}
+	return n == 1
+}
+
+func isFibonacci(n int) bool {
+	if n < 0 {
+		return false
+	}
+	a, b := 0, 1
+	for a < n {
+		a, b = b, a+b
+	}
+	return a == n
+}
+
+func isPerfectSquare(n int) bool {
+	if n < 0 {
+		return false
+	}
+	sqrt := int(math.Sqrt(float64(n)))
+	return sqrt*sqrt == n
+}