Javascript Examples

javascript minimum的圖片搜尋結果

Find the minimum (a,b,c)

function min(a, b, c){
  if(a < b){
    if(a<c){
      return a;
    }else{
      return c;
    }
  }
else{
  if (b >c){
      return b;
    }else{
      return c;
}
}
}
console.log(min(-3, 0,4));
console.log(min(-30, -10 ,-50));

Find the average of the number

var primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29];

var sum= 0;
for (i = 0; i < primes.length; i=i+1) {
  console.log(primes[i]);
  sum=sum+primes[i];
}

console.log("sum="+sum);

var average = sum / primes.length;

console.log("average="+ average);

Write a loop to create triangle.

#
#*
#*#
#*#*
#*#*#
#*#*#*
#*#*#*#
#*#*#*#*#

var line = "#";
for (var i = 1; i<8; i++) {
  console.log(line);

  if(i%2){
    line=line+ "*";
  }else{
    line=line+ "#";
  }
}


Base^exponent

function power(base, exp) {
  if (exp == 0)
          return 1.0;
      else if(exp >=1){
          return base * power(base, exp - 1);
      }else{
          return (1.0/base) * power(base, exp + 1);
  }
};

Find min,max,average of the array.

function stat(arr){
var min = arr[0];
var max = arr[0];
var average = 0;

for(var i = 0; i < arr.length; i++) {
  if(arr[i] < min) min = arr[i];
  if(arr[i] > max) max = arr[i];
  average += arr[i];
}
average /= arr.length;
console.log(min,max,average);
}

True/False


function arrayContains(array, string) {
  for (var i = 0; i < array.length; i++) {
      if (array[i] === string) {
          return true;
      }
  }
  return false;


Write a loop to create a triangle.


#
**
###
****
#####
******
#######
********


for (var i = 7; i>=1; i--) {

  var line= "";
  for (var j=i; j<=7; j++){
    line += "";
    if(i%2){
      line+="#"
    }else{
      line+="*"
    }
  }
  console.log(line);
};

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