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Ganesh K S
Ganesh K S

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Second Largest Element in an array

#secondlargest #array #javascript #programming

This is the given array

let arr=[1,2,4,7,7,5]
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Declare the two variables

let firstMax;
let secondMax;
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Then find out the which is greater in the first 2 index values

if(arr[0] > arr[1]){
  firstMax = arr[0]
}else{
  secondMax=arr[1]
}

if(arr[1] > arr[0]){
  firstMax = arr[1]
}else{
  secondMax=arr[0]
}
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Then begin the loop from 2 to last index of the array

In the first loop

Image description

In the second loop

Image description

In the third loop

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In the fourth loop

Image description

Complete solution to find the second largest in the array

let arr=[1,2,4,7,7,5]

let firstMax;
let secondMax;

if(arr[0] > arr[1]){
  firstMax = arr[0]
}else{
  secondMax=arr[1]
}

if(arr[1] > arr[0]){
  firstMax = arr[1]
}else{
  secondMax=arr[0]
}

for(let i=2;i<arr.length;i++){
  if(arr[i] > firstMax){
    secondMax=firstMax;
    firstMax=arr[i];
  }

  if(arr[i] > secondMax && arr[i] < firstMax){
    secondMax = arr[i]
  }

}

console.log("firstMax",firstMax)
console.log("secondMax",secondMax)
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