for (uint256 i=0; i<array.length; i++) { // do something
}

for(uint256 i = 0; i < 5; i++){ if(i == 3){ break; //it exits from loop } if(i == 2) { continue; //it skip to next iteration of loop } } //while loop in solidity uint256 j = 0; while (j < 10) { // do any actions j++; }