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Go Program to Count Duplicates in an Array

Write a Go program to Count Duplicates in an Array using For loop. Here, we used nested for loops, and the first for loop (for i = 0; i < dupsize; i++) iterates array items from 0 to n, and the inner for loop (for j := i + 1; j < dupsize; j++) starts at 1 (i+ 1). For each i value, nested for loop will iterate from i+1 to dupsize. Inside it, we used the If statement (if dupArr[i] == dupArr[j]) to check any of the array items is equal to the other. Once it found the duplicate array item, dupcount will increment, and the break will exit the GC from for loop.

package main

import "fmt"

func main() {
    var dupsize, i int

    fmt.Print("Enter the Even Array Size = ")
    fmt.Scan(&dupsize)

    dupArr := make([]int, dupsize)

    fmt.Print("Enter the Even Array Items  = ")
    for i = 0; i < dupsize; i++ {
        fmt.Scan(&dupArr[i])
    }
    dupcount := 0
    for i = 0; i < dupsize; i++ {
        for j := i + 1; j < dupsize; j++ {
            if dupArr[i] == dupArr[j] {
                dupcount++
                break
            }
        }
    }
    fmt.Println("\nThe Total Number of Duplicates in dupArr = ", dupcount)
}
Go Program to Count Duplicates in an Array 1

Golang Program to Count Duplicate Items in an Array using functions.

In this Go program, we created a separate (func countDuplicates(dupArr []int, dupsize int)) function that returns the count of duplicate array items.

package main

import "fmt"

var dupcount, i int

func countDuplicates(dupArr []int, dupsize int) int {
    dupcount = 0
    for i = 0; i < dupsize; i++ {
        for j := i + 1; j < dupsize; j++ {
            if dupArr[i] == dupArr[j] {
                dupcount++
                break
            }
        }
    }
    return dupcount
}
func main() {
    var dupsize int

    fmt.Print("Enter the Even Array Size = ")
    fmt.Scan(&dupsize)

    dupArr := make([]int, dupsize)

    fmt.Print("Enter the Even Array Items  = ")
    for i = 0; i < dupsize; i++ {
        fmt.Scan(&dupArr[i])
    }
    dupcount = countDuplicates(dupArr, dupsize)
    fmt.Println("\nThe Total Number of Duplicates in dupArr = ", dupcount)
}
Go Program to Count Duplicates in an Array 2

Filed Under: Go Examples

  • Golang Hello World Program
  • Go Add Two Number
  • Go Calculate Electricity Bill
  • Go Calculate Employee Salary
  • Go Compound Interest
  • Go Count Digits in a Number
  • Go Count Total Notes in Amount
  • Go Cube of a Number
  • Go Even or Odd
  • Go Factorial of a Number
  • Go First Digit of a Number
  • Go Generic Root of a Number
  • Go Largest of Three Numbers
  • Go Leap year Program
  • Go Reverse Natural Numbers
  • Go Roots of a Quadratic Equation
  • Go Multiplication Table
  • Go Number divisible by 5 and 11
  • Go NCR Factorial of a Number
  • Go Positive or Negative
  • Go Power of a Number
  • Go Print Natural Numbers
  • Go Profit or Loss
  • Go Print 1 to 100 without loop
  • Go Program to Print 1 to 100
  • Go Product of Digits in a Number
  • Go Palindrome Number Program
  • Go Print Even Numbers
  • Go Print Odd Numbers
  • Go Factors of a Number
  • Go Perfect Number
  • Go Prime Number
  • Go Reverse a Number
  • Go Simple Interest
  • Go Square of a Number
  • Go Square root of a Number
  • Go Sum of Digits in a Number
  • Go Sum & Avg of Natural Nums
  • Go Sum of Even Numbers
  • Go Sum of Odd Numbers
  • Go Sum of Even and Odd
  • GoSwap Two Numbers
  • Go Sphere Vol & Surface Area
  • Go Cylinder Vol & Surface Area
  • Go Cuboid Vol & Surface Area
  • Go Cube Volume & Surface Area
  • Go Cone Volume & Surface Area
  • Go Arithmetic Operation on Array
  • Go Count Duplicates in Array
  • Go Even Numbers in Array
  • Go Largest Array Item
  • Go Largest & Smallest in Array
  • Go Negative Numbers in Array
  • Go Odd Numbers in an Array
  • Go Positive Numbers in Array
  • Go Pos & Neg in Separate Array
  • Go Reverse an Array
  • Go Search for Array Items
  • Go Smallest Array Item
  • Go Character is a Digit
  • Go Convert Character to Lower
  • Go Convert Character to Upper
  • Go ASCII Value of Character
  • Go ASCII Values of All Characters
  • Go Character is a Lowercase
  • Go Character is an Alphabet
  • Go Character is an Uppercase
  • Go Char Vowel or Consonant
  • Go Print Alphabets from a to z
  • Go Print Alphabets from A to Z
  • Go Matrix Arithmetic Operations
  • Go Program to Add Two Arrays
  • Go Matrix Multiplication Program
  • Go Program to Add Two Matrices
  • Go Identity Matrix
  • Go Sparse Matrix
  • Go Array Multiplication Program
  • Go Program to Print Array Items
  • Go Program to Print Matrix Items
  • Go Matrix Determinant
  • Go Sum of Each Matrix Column
  • Go Sum of Each Matrix Row
  • Go Sum of Matrix Diagonal
  • Go Sum of Matrix Lower Triangle
  • Go Sum of Matrix Upper Triangle
  • Go Print Matrix Upper Triangle
  • Go Print Matrix Lower Triangle
  • Go Sum of Matrix Each Row & Col
  • Go Sum of Matrix Opp Diagonal
  • Go Interchange Matrix Diagonals
  • Go Scalar Matrix Multiplication
  • Go Odd Index Position Array Item
  • Go Even Index Position Array Item
  • Go Symmetric Matrix
  • Go Two Matrixes are Equal
  • Go Count Positive & Neg in Array
  • Go Count Even and Odd in Array
  • Go Transpose a Matrix

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